Everyone from financier Michael Milken to bankers and venture capitalists had an opinion about the market-rattling coronavirus at the annual Montgomery Summit in Santa Monica that gathered top-flight investors and entrepreneurs. "Some of you made a tough decision by coming here," conference organizer Jamie Montgomery told a lunchtime crowd. "I'll breath easy the next couple weeks if nothing happens."

Between pitch sessions from companies as varied as 3D rocket-maker Relativity Space to interactive game publisher Scopely, attendees sipped matcha lattes, pumped hand sanitizer and talked deals.

The normal routine of handshaking was out, replaced by somewhat awkward fist bumping. Attendees lingered longer than usual at bathroom sinks, making sure to vigorously wash their hands, and constantly pumped hand sanitizer from one of several germ eradication stations set-up at the Fairmont Hotel.

Montgomery told the crowd to alert him if "anything happened" in the next couple weeks, not the most reassuring thing to hear as people dug into their chicken salads and a discussion about the next decade of artificial intelligence.

The fast-spreading COVID-19 cast a pall over the summit that gathered hundreds as markets continued their roller coaster ride on Thursday.

Meanwhile, people like partner Marko Papic, chief strategist at Clocktower Group, were already predicting a recession.

"The U.S. consumer is 15% of global GDP, that's a large chunk," he told a crowd that had gathered for a pre-lunchtime talk about coronavirus. And warned that an over stimulus response from governments could lead to inflation.

The same day, Congress approved $8.3 billion to fight the virus that's topped 200 cases in the United States. In California, already under a state of emergency, a cruise ship with thousands aboard en route from Hawaii to San Francisco was held in quarantine as officials rushed to test passengers. And around the country signs that the virus would take an economic toll became in sharper focus

Montgomery said he had considered canceling the conference, but was assured by his discussion with health officials that the risk was low.

Then, just as the Montgomery Summit was set to open, Los Angeles County officials declared a health emergency, confirming six new cases of coronavirus, and warning that schools and business may need to be closed if COV1D-19 continues to spread.

Milken tried to temper what he painted as a bit of a frenzy, telling a crowd on Wednesday that he saw this as an opportunity to harness the power of big medical companies like United Health Care and Kaiser Permanente. He predicted in weeks small prototype test kits would be available for the virus. And suggested the medical giants come together to fight the virus, much like big companies did during World War II.

"Science can accomplish in an hour what might have taken in a year," he said. "We should be much better prepared to deal with this issue, once we get the facts."

Ben Bergman contributed reporting