![Ashish K. Jha, MD, MPH on X: "There is very short pre-contagious period Where folks are PCR + but rapid antigen negative Labeled A There is the contagious period: PCR + and Ashish K. Jha, MD, MPH on X: "There is very short pre-contagious period Where folks are PCR + but rapid antigen negative Labeled A There is the contagious period: PCR + and](https://pbs.twimg.com/media/FHixbJMWQAImb6N.jpg)
Ashish K. Jha, MD, MPH on X: "There is very short pre-contagious period Where folks are PCR + but rapid antigen negative Labeled A There is the contagious period: PCR + and
![UC Health on X: "Omicron is the second most contagious virus ever known to humankind, next to measles. Help keep your loved ones as safe as possible by getting the COVID-19 vaccine: UC Health on X: "Omicron is the second most contagious virus ever known to humankind, next to measles. Help keep your loved ones as safe as possible by getting the COVID-19 vaccine:](https://pbs.twimg.com/media/FKOBpf-XIAcuH5z.jpg)
UC Health on X: "Omicron is the second most contagious virus ever known to humankind, next to measles. Help keep your loved ones as safe as possible by getting the COVID-19 vaccine:
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Infectiousness of SARS-CoV-2 breakthrough infections and reinfections during the Omicron wave | Nature Medicine
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Omicron infections contagious for at least 6 days; Takeda drug shows promise as COVID treatment | Reuters
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