Guest Column: Here's How Businesses Can Make Sure their Employees Are Virus-Free

Dr. Joanne Weidhaas
Dr. Joanne Weidhaas, MD, PhD, MSM is the co-founder of Los Angeles-based molecular genetics company MiraDx, the founder of MiraKind.org, and currently a professor and vice-chair in the department of radiation oncology at UCLA.
Guest Column: Here's How Businesses Can Make Sure their Employees Are Virus-Free
Courtesy of MiraDx

As the states of California, Oregon and Washington begin strategizing on their regional plan to re-open their economies and control the future spread of COVID-19, a crucial question remains: How can businesses ensure their employees remain virus-free now and in the future?

For the thousands of western U.S. businesses seeking to safely bring their employees back to work, and tens of thousands of residents who desperately want and need to return to their jobs, a robust supply of COVID-19 tests, coupled with a systematic COVID-19 testing strategy supported by evidence-based guidelines will be key to success.


To date, the country has faced testing shortages, confusion about the various testing types, and lack of clarity around who should or can have access to tests. However, that does not mean we can't course-correct by thoughtfully laying the necessary roadmap for more transparent and effective testing guidelines as we look to reopen our economy.

The first step is a clear understanding of the current testing options available. The two predominant tests on the market are viral tests and serum antibody tests:

  • Viral, or PCR, tests determine if an individual currently has COVID-19 by testing for the virus itself through a swab of the nose or throat. These tests indicate whether the person is contagious to others, even if they are asymptomatic. Viral tests are complex and can require at least 24 hours to perform and report. The PCR test is considered the gold standard given its 90%+ accuracy rate and ability to detect even low levels of virus.
  • Antibody tests determine whether an individual has been infected with the virus and has developed an immune response (antibodies) against the virus. Antibody tests use a blood sample and can be processed relatively quickly, yet they will not identify people with an early infection, nor can they tell whether an individual is no longer shedding the virus and therefore *no longer contagious.

Both types of tests can be delivered as laboratory tests or point-of-care (POC) tests, the latter having the goal of quick turn-around and broad community delivery. However, none of the companies marketing POC tests have published accuracy data based on patient testing yet.

So where does that leave businesses looking to get their workforce back up and running? Businesses must establish protocols for appropriate testing of employees to confirm that they are virus-free before returning to work. Taking someone's temperature is NOT a valid proxy for determining whether an individual is "healthy" nor is an antibody test alone. Instead, we need to develop a clear decision tree that includes the two different types of testing.

Photo courtesy of Joanne Weidhaas

Companies should institute a multi-step COVID-19 testing protocol:

1) Any person who previously tested positive must receive a negative viral clearance test before returning to work.

2) Any person who has no confirmation of prior infection should receive a viral test first. If they are positive for the virus, they must be retested until they receive a negative result. If they are negative for the virus, they should then have an antibody test to determine whether they were previously infected.

If negative for virus and positive on the antibody test, they can also safely return to work. If negative for the virus and negative on the antibody test, they should know they are susceptible to infection if they return to work.

For those who are still susceptible, one option is to allow them back to work, but develop a prospective viral screening protocol. These screening tests could be on a volunteer and rotating basis through the workforce, with perhaps 10%-20% being tested each week. Anyone with symptoms also should be sent home and receive immediate viral testing.

The federal government should be taking action to coordinate testing supply, help direct it to the highest priority populations and subsidize the cost of testing. Business leaders should coordinate efforts to establish testing protocols and sharing of testing resources for the workforce that reflect the most current science to ensure that workers can safely return to, and stay at, work.

Viral testing is the only established method to confirm if an individual is virus-free and therefore safe to return to work. At MiraDx, we are conducting PCR testing for COVID-19 and are seeing many individuals continue to be contagious for weeks after their last symptoms. This is significantly longer than the current CDC guidelines that indicate that individuals are "clear" to return to work 72 hours after fevers and symptoms are gone. We are completing a larger study on this issue and will report results soon.

Dr. Joanne Weidhaas, MD, PhD, MSM is the co-founder of Los Angeles-based molecular genetics company MiraDx, the founder of MiraKind.org, and currently a professor and vice-chair in the department of radiation oncology at UCLA.

*This story has been corrected to say that if you are no longer shedding virus, you are no longer contagious. It previously and improperly said the opposite.

From Breaking Tech News to Backing It
Image Source: Sources

🔦 Spotlight

Hey there, Los Angeles.

For the past decade, Alex Heath has made a career out of figuring out what the technology industry is doing before everyone else.

Now, he is going to invest in it.

Heath announced this week that he is joining Los Angeles-based Sound Ventures as a partner on its investing team. The veteran technology journalist will continue independently operating Sources, the newsletter and podcast business he launched after leaving The Verge last year.

It is an unusual career move, but perhaps not as unusual as it initially appears.

Journalists and venture capitalists spend much of their time doing surprisingly similar work. Both look for signals before they become obvious, build relationships with people who know what is coming next and attempt to distinguish a lasting shift from a convincing story.

The crucial difference is what happens after they find one.

A journalist publishes. An investor writes a check.

Heath has spent years reporting on some of the technology industry’s most powerful companies and executives. At The Verge, where he served as deputy editor, his work focused on the internal decisions shaping companies such as Meta. More recently, Sources has taken readers inside the AI race through reporting and interviews with executives including Sam Altman and Mark Zuckerberg.

That experience gives Sound something venture firms increasingly want: someone who already understands the founders, companies and narratives competing to define the next era of technology.

Sound Ventures is not exactly starting from scratch. Led in Los Angeles by Guy Oseary and Effie Epstein, the firm manages nearly $2B and has backed companies including OpenAI, Anthropic, World Labs, Brex, Affirm and GitLab. According to The Wall Street Journal, Sound deployed more than $800M into early positions in OpenAI, Anthropic and World Labs as it intensified its focus on artificial intelligence.

Heath is joining during an important transition for the firm. Ashton Kutcher, who co-founded Sound with Oseary in 2015, departed earlier this year to launch a new venture firm. Oseary and Epstein are continuing to lead Sound while raising its fifth flagship fund and sharpening its strategy around companies with the potential to reach meaningful commercial scale.

Adding Heath suggests that Sound’s next phase will not be defined by capital alone.

As AI makes it faster and less expensive to build software, technical capability may become less effective as a differentiator. More startups will be able to create credible products, and more of them will compete for the same finite supply of customers, talent and attention.

In that environment, knowing how to identify a compelling founder is only part of the job. Venture firms also need to understand how companies earn trust, communicate what makes them different and remain culturally relevant in an increasingly crowded market.

That is familiar territory for Sound. Oseary built his career managing artists including Madonna and the Red Hot Chili Peppers, where recognizing talent was inseparable from helping that talent connect with an audience. Heath brings a different version of the same instinct, developed through finding important stories and understanding why people should pay attention to them.

Heath will continue owning and operating Sources independently while expanding its podcast and interviewing prominent voices across the technology industry. That means he is not abandoning the platform or audience he built. He is adding a new vantage point.

The combination could prove especially valuable to Sound. Heath brings the instincts of a reporter, the reach of an independent media founder and years of relationships with the people shaping technology. Now, he can apply that experience to finding and supporting the next generation of founders.

It is a fitting evolution for someone who has spent his career identifying important technology stories early.

This time, he will have the opportunity to help write what happens next.

Venture firms once competed primarily through capital, networks and operating expertise. Now, access to attention is becoming an asset of its own. Founders need help reaching customers and shaping public understanding, while investors want better ways to recognize which people and ideas will command that attention next.

Sound Ventures hired someone who has spent a decade doing exactly that.

Heath used to decide which technology stories were worth following.

Now, he will help decide which ones get funded.

More from this week’s LA startup and venture scene below.

🤝 Venture Deals

    LA Companies

    • Maven Robotics emerged from stealth with a $100M Series A and humanoid robots already operating in warehouse deployments. The company says its robots can work for 16 hours a day with 99% uptime and is positioning itself as a reliable alternative for businesses whose existing robotics providers fail to meet deployment targets. - learn more

    LA Venture Funds
    • Bedrock Capital participated in Mach Industries’ $600M Series C extension alongside Ribbit Capital, Infinite Capital and Sequoia, bringing the round’s total to $900M and doubling the defense startup’s valuation to $3.7B in three months. The Huntington Beach company manufactures lower-cost unmanned aircraft, strike weapons and counter-drone systems, while expanding into solid rocket motors and jet-engine production to address critical defense supply-chain bottlenecks. - learn more
    • U First Capital participated in Positron AI’s $875M funding round, which was co-led by NEA, Atreides Management, Valor Equity Partners, Andra Capital, SemiAnalysis Capital and Jim Clark, valuing the AI chip startup at $5B. Positron will use the capital to bring its memory-focused Asimov processor and Titan server system to market, offering an energy-efficient alternative to GPUs for running AI models. - learn more
    • WndrCo participated in Harvey’s $550M funding round, co-led by Diffusion and Lightspeed Venture Partners, valuing the legal AI company at $15.5B. Harvey will use the capital to expand its team and advance its AI platform, which helps law firms, in-house legal departments and professional-services organizations build and manage proprietary legal intelligence. - learn more
    • Nolan Capital participated in Encoded Therapeutics’ $275M Series F, which was co-led by GV and another healthcare-focused fund and included several new and returning investors. The biotech will use the capital to advance its lead gene therapy for Dravet syndrome through pivotal studies, expand its manufacturing capabilities and prepare another treatment for post-amputation nerve pain for clinical testing in 2027. - learn more
    • UP Partners led Overroute’s $5.5M seed round to expand its AI-powered freight execution platform for large trucking fleets and logistics operators. The company’s AI agents automate load monitoring, exception management and freight coordination, helping fleets respond to disruptions and keep shipments moving with less manual work. - learn more
    • Patron Fund participated in System’s $20M funding round alongside Will Ventures, Vine, Courtside, Daybreak, SV Angel and RiverPark Ventures. The San Francisco company will use the capital to expand its vertically integrated peptide platform, which connects patients with licensed clinicians and personalized treatments from U.S. compounding pharmacies while emphasizing testing, traceability and regulatory compliance. - learn more
    • Alpha Edison led Onix’s $5M pre-seed round, with participation from Garage Capital, Ride Home Fund and strategic investors including UTA co-founder Jeremy Zimmer and Real Ventures co-founder JS Cournoyer. The Montreal startup will use the funding to develop its private AI platform, onboard more specialists and prepare for a public launch, offering personalized guidance built exclusively from licensed expert knowledge rather than information scraped from the internet. - learn more
    • Rebel Fund participated in VideoGen’s $3.3M seed round alongside Y Combinator, Lobster Capital, Stretford End Capital, Mento VC, Pioneer Fund and Decacorn VC. The San Francisco startup, which has reached more than 5M users across 190 countries, will use the funding to expand its team and grow its AI platform for producing editable, copyright-free videos. - learn more

      Download the dot.LA App

      Who Gave the AI Access?

      🔦 Spotlight

      Happy Friday, Los Angeles.

      The newest employee in the office does not need a desk, a salary or a coffee order. But it may have access to your company’s emails, financial records, customer data and software systems.

      That raises a fairly important question: Who decides what an AI agent is allowed to do?

      El Segundo-based cybersecurity company Saviynt is building its next chapter around the answer.

      Carrick Capital Partners announced this week that it closed a $600M continuation vehicle for Saviynt, including a new $255M investment in the company. The transaction allowed Carrick’s existing investors to either take liquidity or remain invested, while also providing liquidity to Saviynt employees through a tender offer.

      Continuation vehicles are not exactly known for making gripping Friday reading. The company behind this one is considerably more interesting.

      Saviynt develops identity security software that helps businesses determine who can access their applications, data and infrastructure. Increasingly, however, “who” does not refer exclusively to a person.

      Companies are deploying AI agents that can retrieve information, write code, communicate with customers and complete multistep tasks with limited supervision. These digital workers need access to company systems to be useful, but every new permission also creates another opportunity for sensitive information to be exposed or an unintended action to be taken.

      In other words, AI agents may be tireless employees. They are not necessarily trustworthy ones.

      Saviynt is addressing that problem through Zuma, its platform for discovering, securing and governing AI agents, large language models and other nonhuman identities alongside a company’s human workforce. The goal is to give businesses one place to determine what every identity can access, whether it belongs to an employee, a contractor, a software application or an autonomous agent operating at machine speed.

      The opportunity appears to be growing quickly. Saviynt has surpassed $300M in annual recurring revenue, up from approximately $10M when Carrick first invested. The company says bookings have increased by more than 80% this year while customer retention remains at 96%.

      The new investment was completed as part of the final close of Saviynt’s previously announced $700M Series B, which valued the company at approximately $3B. Carrick’s continuation vehicle was led by Coller Capital and co-led by HSBC Asset Management, giving the investment firm more time and capital to remain behind one of its strongest-performing companies.

      For Saviynt, the funding will support further development of its identity platform, deeper integrations with major cloud and software providers and its push to become a central security layer for the agentic workplace.

      That ambition reflects a broader change taking place inside companies. The first wave of enterprise AI focused largely on what the technology could generate. The next phase is about what it can actually do, and whether businesses can maintain control once AI moves from answering questions to taking action.

      Saviynt is betting that identity will become the gatekeeper.

      AI agents are gaining access to the digital workplace, whether corporate security teams are ready for them or not.

      Someone still has to hold the keys.

      More from this week’s LA startup and venture scene below.

      🤝 Venture Deals

        LA Venture Funds

        • Fulcrum Ventures participated in Critical Materials Group’s $10.3M seed round, led by Overmatch Ventures and joined by Victory Six Advisors. The Austin-based defense manufacturer will use the funding to develop and commission modular, automation-ready production systems designed to expand domestic manufacturing capacity for munitions and advanced energetic materials. - learn more
        • Fusion VC participated in Newlight’s $9M seed round alongside lomarlabs, BIRD Energy, Undeterred Capital and CiRi Ventures. The San Francisco-based maritime technology company recently demonstrated its hydrogen-hybrid retrofit on an 8,500-nautical-mile commercial voyage, reducing fuel consumption by 24% and carbon dioxide emissions by 28%. - learn more
        • Rebel Fund participated in Metal’s $4.5M seed round alongside a16z, Y Combinator, Gaingels, Indus Valley Capital, Phaze Ventures and Pioneer Fund. Metal will use the funding to build an AI-native operating system that helps founders identify relevant investors, manage outreach and automate other parts of the venture fundraising process. - learn more
        • UP.Partners participated in Reframe Systems’ $40M funding round, led by Energy Impact Partners and joined by Counterpart Ventures, E12 Ventures, Global Brain, Thin Line Capital and LACI Impact Fund. The homebuilding startup will use the capital to expand its network of robotics-powered microfactories, which it says can construct homes three times faster and at 35% lower cost than traditional methods. - learn more
        • Clocktower Technology Ventures participated in Sharpi’s $4M seed round, co-led by NXTP and ONEVC and joined by MAYA Capital. The Brazilian startup will use the funding to expand its team and develop autonomous AI agents that connect WhatsApp conversations with enterprise systems to automate B2B sales tasks such as order processing, customer follow-ups and demand generation. - learn more

        LA Exits

        • Extensiv, a California-based provider of warehouse management and fulfillment software, has been acquired by Descartes Systems Group for approximately $120M in cash. The acquisition adds Extensiv’s AI-enabled inventory, order, billing and omnichannel fulfillment tools to Descartes’ logistics network, strengthening its offerings for third-party logistics providers and ecommerce brands. - learn more
        • DocSolutionUSA has been acquired by Stewart Information Services alongside ProTitleUSA, adding mortgage document generation and automation capabilities to Stewart’s title services platform. The companies provide title, document and due diligence services for mortgage servicers, investors and capital markets clients; financial terms were not disclosed. - learn more
        • Fysh Foods, the Los Angeles-based plant-based seafood brand founded by creator and entrepreneur Zoya Biglary, has been acquired by City Roots Hospitality in an all-cash deal with undisclosed terms. City Roots plans to introduce Fysh Foods’ raw fish alternatives across its New York City restaurants and potentially expand the brand beyond the city as its restaurant portfolio grows - learn more

          Download the dot.LA App

          An LA AI Company Just Won Entertainment’s Backing

          🔦 Spotlight

          Hello LA.

          The entertainment industry has spent the past several years debating what generative AI could take from creators.

          This week, some of its biggest companies put money behind an AI startup promising to build something for them instead.

          Los Angeles-based Stability AI raised $76M in Series B funding from an investor group that includes Electronic Arts, Sony Music Group, Universal Music Group and Warner Music Group. AMD Ventures and Pacific Alliance Ventures also joined the round, while LA-based MANTIS Capital and Sound Ventures are among the company’s existing backers.

          The financing brings Stability AI’s total funding under CEO Prem Akkaraju to $232M, including two equity rounds and convertible notes. The company plans to use the new capital to expand its creative production tools, applied research and professional services across music, gaming and entertainment.

          The amount is notable. The names attached to it are the bigger story.

          Generative AI’s arrival in entertainment has been anything but quiet. Artists have questioned whether their work was used to train models without permission. Studios have faced pressure over how the technology could affect jobs. Record labels have pursued AI companies in court while simultaneously exploring how the same technology might fit into their businesses.

          Now, several of the world’s largest entertainment companies are investing directly in one.

          That does not mean the industry has resolved its concerns about AI. It means some of its biggest players would rather help shape the technology than wait to see what it becomes.

          Stability AI is positioning itself for that opening. Rather than focusing solely on general-purpose models, the company is building tools specifically for professional creatives. Its recently launched Stable Audio 3.0 was trained on fully licensed music and lets artists generate, edit and arrange audio through a web platform or directly inside digital audio workstations.

          Image Source: Stability AI

          That licensed-data approach is central to the pitch. The next phase of creative AI will not be decided only by which company produces the most impressive model. It will also depend on which companies can earn the trust of the artists, studios and rights holders whose work gives those models value.

          For its new strategic investors, the round offers more than financial upside. It creates a closer view into how generative AI may change production, a voice in how the tools develop and an opportunity to establish rules before those rules are established for them.

          For Stability AI, the backing provides something equally important: credibility inside industries that have every reason to scrutinize what it is building.

          The company now has capital and access to some of the largest catalogs, franchises and creative workforces in entertainment. What it does with that access will determine whether this becomes a meaningful alliance or simply an impressive collection of logos.

          Either way, the industry is no longer watching from a safe distance.

          It has entered the room.

          LA’s Air-Taxi Plans Are Coming Downtown

          While Stability AI is trying to change how entertainment gets made, Archer Aviation wants to change how people get to it.

          AEG and Archer announced plans to develop downtown Los Angeles’ first vertiport at L.A. LIVE, creating a potential new stop in Archer’s proposed electric air-taxi network ahead of the 2028 Olympic and Paralympic Games.

          Image Source: Archer

          The planned site would sit beside Crypto.com Arena and allow passengers to travel to and from the entertainment district aboard Archer’s Midnight aircraft. The company says its network could turn drives that take an hour or longer into electric flights lasting approximately 10 to 20 minutes.

          Archer has already identified SoFi Stadium, USC and Hollywood Burbank Airport as possible locations, with its recently acquired Hawthorne Airport expected to serve as the network’s central operating hub. As the official air-taxi provider of LA28 and Team USA, Archer has an unusually visible deadline for turning those plans into something tangible.

          AEG and Archer have completed an initial feasibility study of the L.A. LIVE site, including reviews of land use, airspace, power availability and community impact. The next phase will examine operations and the passenger experience.

          There is still a substantial distance between a proposed vertiport and a functioning air-taxi network. The infrastructure must be built, regulatory approvals must be secured and passengers must be persuaded that flying across the city is safer and more practical than staying on the ground.

          Still, few locations could make that future feel more real than L.A. LIVE. Millions of people already pass through the district for concerts, games and major events. Placing a vertiport there would bring urban air mobility out of the concept stage and directly into public view.

          Together, this week’s announcements show Los Angeles becoming a testing ground for two technologies still moving from promise toward everyday use.

          One could reshape how entertainment is created. The other could reshape how Angelenos reach it.

          In a city famous for both its creative industries and its traffic, that feels appropriately on brand.

          More from this week’s LA startup and venture scene below.

          🤝 Venture Deals

            LA Companies

            • Atorie raised a $9.5M seed round from investors including a16z speedrun, Night Capital and Lightspeed Venture Partners’ Jeremy Liew. The AI-powered fashion startup connects consumers directly with luxury manufacturers to offer high-quality goods without traditional designer markups, and will use the funding to expand logistics, production and its AI shopping tools. - learn more
            • Long Beach-based Maglut Heavy Industries emerged from stealth with $3.1M in pre-seed funding from Wave Function, Nova Threshold and Julian Capital. The startup is developing a chromatography-based system to process and refine rare earth elements domestically, with pilot tests producing materials at more than 99.9% purity. - learn more

            LA Venture Funds
            • MANTIS Venture Capital participated in Voya Energy’s $35M Series A, led by Energy Impact Partners and joined by John Doerr, StepStone, Founders Fund, Overmatch and Seven Stars. The Hayward-based startup will use the funding to commercialize its aluminum-fueled generators, which provide clean, off-grid power for data centers and other energy-intensive operations without combustion or local air emissions. - learn more
            • Regeneration.VC participated in eComID’s $17M seed round, led by Systemiq Capital and joined by Course Corrected, Stadium and returning investor CapitalT. The Stockholm-based startup will use the funding to expand internationally and scale its AI-powered Shopping Passport, which helps retailers personalize sizing and product discovery while reducing returns. - learn more
            • Clocktower Technology Ventures participated in Helcim’s $53M Series C, led by BDC Capital’s Growth Venture Fund and joined by new investors Curql Collective and LA-based Gold House Ventures. The Calgary payments company will use the funding to expand its platform, develop additional financial services and serve more small and midsize businesses across North America. - learn more

            LA Exits

            • Altruist agreed to be acquired by Vanguard, giving the Los Angeles-based wealth technology and custody platform greater resources to expand its tools for independent financial advisors. Altruist will continue operating as a standalone business under its existing leadership and brand after the deal closes, which is expected later this year pending regulatory approval; financial terms were not disclosed. - learn more
            • Personality AI has been acquired by WildBrain for approximately $11M in cash and 1M WildBrain shares upfront, with additional payments tied to future performance. The startup develops kid-safe conversational AI experiences for entertainment characters, including “Hey Peppa Pig,” and will help WildBrain expand its franchises into interactive products across toys, apps and digital platforms. - learn more

              Download the dot.LA App

              RELATEDEDITOR'S PICKS
              Trending