Coronavirus

Here’s why Florida is seeing a surge of COVID cases again — and how to protect yourself

Florida is seeing an increase in COVID-19 again, accounting for 1 in 5 new cases in the United States.

Hospitals in Miami-Dade and Broward counties are also reporting an uptick in COVID patients and are beginning to limit visitations as they prepare for another potential surge of cases.

So, what’s causing the increase?

Health experts have told the Miami Herald the new cases likely have to do with a variety of factors, including:

Hotter and wetter weather driving more people indoors

Unvaccinated people not wearing masks

The spread of highly infectious COVID variants like Delta, which has become the dominant COVID strain worldwide. Delta makes up more than half of the new coronavirus cases in the U.S.

And while cases, hospitalizations and deaths remain far below last winter’s peak, Centers for Disease Control and Prevention Director Rochelle Walensky says most of the new cases in the country are among people who have not been vaccinated.

“This is becoming a pandemic of the unvaccinated,” Walensky said at the White House last Friday.

That’s similar to what South Florida hospitals are seeing.

“The overwhelming majority are unvaccinated individuals and they do appear to be younger than before,” said Dr. Marc Napp, chief medical officer for Memorial Healthcare in South Broward.

About eight million people in Florida who are eligible for a shot are not vaccinated. Almost one million are 65 and older, a population considered to be high risk for severe COVID complications and death.

So far, more than 9.7 million Floridians have completed the two-dose series of Pfizer-BioNTech or Moderna, or have completed Johnson & Johnson’s single-dose vaccine.

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Tips to help prevent COVID-19

Whether you’re fully vaccinated or not, the CDC still recommends washing your hands frequently for at least 20 seconds, or about how long it takes to sing “Happy Birthday,” to help prevent the spread of COVID-19

You should also clean and disinfect surfaces that are frequently touched, including tables, doorknobs, phones and toilets. This is especially important if you or someone you live with has tested positive for COVID-19. Everyone, including those who are fully vaccinated, are also still required to wear a mask inside buses, taxis and other public transportation.

If you’re not fully vaccinated, here are some other CDC tips:

Get vaccinated. Pfizer, Moderna and J&J’s COVID-19 vaccines are all effective in helping to prevent hospitalizations and death. Pfizer’s vaccine is for people 12 and older. Moderna and J&J are for people 18 and older.

Wear a mask inside stores, movie theaters and other indoor public places. While masks are not needed outside, the CDC still recommends wearing one if you’re in a crowded area like at a concert or protest.

Stay at least six feet away from others. This doesn’t apply to people you live with, unless one of them is ill with COVID-19.

Miami Herald staff writer Daniel Chang contributed to this report.

This story was originally published July 20, 2021 at 3:52 PM.

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Michelle Marchante
Miami Herald
Michelle Marchante covers the pulse of healthcare in South Florida and also the City of Coral Gables. Before that, she covered the COVID-19 pandemic, hurricanes, crime, education, entertainment and other topics in South Florida for the Herald as a breaking news reporter. She recently won first place in the health reporting category in the 2025 Sunshine State Awards for her coverage of Steward Health’s bankruptcy. An investigative series about the abrupt closure of a Miami heart transplant program led Michelle and her colleagues to be recognized as finalists in two 2024 Florida Sunshine State Award categories. She also won second place in the 73rd annual Green Eyeshade Awards for her consumer-focused healthcare stories and was part of the team of reporters who won a 2022 Pulitzer Prize for the Miami Herald’s breaking news coverage of the Surfside building collapse. Michelle graduated with honors from Florida International University and was a 2025 National Press Foundation Covering Workplace Mental Health fellow and a 2020-2021 Poynter-Koch Media & Journalism fellow.  Support my work with a digital subscription
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