Los Angeles is scrambling to deal with the federal health officials' call for a pause in the use of single-dose Johnson & Johnson vaccines that have helped speed up local inoculations.

L.A. Mayor Eric Garcetti said city-run vaccination sites had more than 3,000 patient appointments scheduled for Tuesday that will now receive a first dose of Pfizer, instead of the planned Johnson & Johnson vaccine. It comes two days after Los Angeles County opened vaccinations to everyone 16 and older.

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A 24-year-old unemployed college graduate frustrated by the tedious process of finding his grandmother a vaccine appointment created a new site to make it easier.

Find My Vax LA translates appointment information to any language, searches for open slots by zip code and on Friday released a Twitter bot that alerts followers of availability.

Andrew Friedman was hit with the same idea software engineers across the country have chased since public officials started distributing the COVID-19 shot.

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It's almost 90 degrees outside in Los Angeles as lines of cars pull up to Dodger Stadium, home to a mass vaccination site that opened Friday.

"Please make sure that they're not under the sun in the cart," Edith Mirzaian is telling a volunteer as she directs the person to put ice packs on coolers that hold up to 20 COVID vaccines. Mirzaian is a USC associate professor of clinical pharmacy and an operational lead at one of California's largest vaccination sites.

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