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COVID-19 symptoms typically last around five to seven days and can include fever, sore throat, muscle aches, exhaustion, nausea, cough and sinus congestion, among other problems.

According to the CDC, these are possible symptoms across COVID-19 variants: Fever or chills, cough, shortness of breath or difficulty breathing, fatigue, muscle or body aches, headache, new loss...

According to the CDC, the Omicron variant spreads more easily than the original SARS-CoV-2 virus and the Delta variant. In its early days, the variant caused an alarming spike in COVID-19 cases in South Africa—they went from 300 a day in mid-November 2021 to 3,000 a day at the end of that month.

Importantly, people need to start taking antiviral drugs within five days of developing symptoms, Lall said. She added that COVID drugs and vaccines remain free in the United States....

The term "bivalent" means the booster was developed to address both the original virus and the more recent version of the virus known as Omicron. The new analysis from the CDC looked at 29,175...

In the past week, it nearly doubled from 21.7% prevalence. Scientists and public health officials have been closely monitoring the XBB subvariant family for months because the strains have many...

XBB.1.5 was first identified in the United States in New York in October 2022. Both XBB and the Kraken version (XBB.1.5) are recombinant (or hybrid) virus subvariants, meaning they are made up of two strains—in this case, two offshoots of the Omicron BA.2 sublineage. It is believed that both strains infected one person and mixed to form the ...

“That period often lasts up to 10 days,” he added — and once again, your first day of symptoms counts as day zero. Long story short, you are likely contagious for about 10 days after symptoms begin. You should isolate for the first five days and wear a mask on at least days six through 10. But you’re most infectious at certain points.