While the U.S. experienced a surge in COVID-19 cases caused by the omicron variant earlier this year, cases are slowly climbing again, mainly due to the highly transmissible BA.2 subvariant, leading health officials to issue warnings.
For those without symptoms, CDC guidance states they are considered contagious at least two days before a positive test. The CDC states that anyone who may have been exposed to someone with COVID should test five days after their exposure, or as soon as symptoms occur.
For most patients, symptoms appear to last three to five days, said Dr. Rahul Sharma, the emergency physician-in-chief at the NewYork-Presbyterian/Weill Cornell Medical Center.
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