before the COVID pandemic, the definition of a vaccine had been relatively stable for nearly a couple decades with minor word changes occurring every few years. All through that time the intent of a vaccine — to give you immunity by protecting you from a specific disease — had remained bas...
Those who have been fully vaccinated and around someone who has COVID-19 are recommended to get tested between five and seven days after their exposure, according to the most recent guidance from the CDC, though previous guidance had been between three and five days. Those who de...
School administrators have worked closely with local public health officials and the health department to trace “close contacts” of infected individuals, which has determined who will quarantine as a result of COVID exposure. Last week, that process got a bit more complicated, when the Centers ...
Compared to an entirely maskless arrangement, fitting a dummy head with a three-ply cotton mask over a three-ply medical mask reduced aerosol exposure 83% when a similar dummy with no mask was the source; the reduction was nearly the same when the source dummy was double-masked and the "...
The new quarantine guidelines will allow people who have come in contact with someone infected with the virus to resume normal activity after 10 days, or seven days if they test negative for COVID-19. Until now, a 14-day quarantine period had been recommended in all cases of exposure. ...
The update encourages individuals to isolate and test if they have suspected COVID-19 symptoms. Those who test positive should remain in isolation for 5 days while they are most likely to be infectious. After 24 hours without a fever and improvements in all other symptoms, they may leave isol...
The Centers for Disease Control and Prevention (CDC) in the US has backed booster doses of Pfizer and BioNTech's COVID-19 vaccine Comirnaty in line with its recent FDA approval, overruling the advice of its own expert advisors. The CDC's Advisory Committ
The Centers for Disease Control and Prevention guidelines for COVID-19 still call for a period of isolation for those dealing with the virus. This comes after a summer COVID wave appears to have grown in some parts of the country. CBS News medical contributor Dr. Céline Gounder has more ...
before their exposure to the coronavirus would list those conditions in addition to COVID-19. The coronavirus would still be labeled the underlying cause of death — or the disease that “initiated the train of events leading directly to death," per the WHO'sdefinition— since the preexisting...
In an alert issued Thursday, the CDC called the condition multisystem inflammatory syndrome inchildren. The agency's case definition includes current or recent COVID-19 infection or exposure to the virus, a fever of at least 100.4 for at least 24 hours, severe illness requiring hospitalization, ...