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If you have no COVID symptoms but a known exposure, you might still have COVID. Take precautions, test again 48 hours later, and if the second test is negative, take a third test 48 hours later.
The COVID-19 virus has not been detected in drinking water. [82] Conventional water treatment (filtration and disinfection) inactivates or removes the virus. [82] COVID-19 virus RNA is found in untreated wastewater, [82] [22] [83] [a] but there is no evidence of COVID-19 transmission through exposure to untreated wastewater or sewerage systems ...
The (Google/Apple) Exposure Notification System (GAEN) [2] [3] [a] is a framework and protocol specification developed by Apple Inc. and Google to facilitate digital contact tracing during the COVID-19 pandemic.
A COVID-19 vaccine is intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), the virus that causes coronavirus disease 2019 . Prior to the COVID-19 pandemic, an established body of knowledge existed about the structure and function of coronaviruses causing diseases like severe acute ...
If you’ve been exposed to someone with Covid-19 but aren’t experiencing symptoms, you should wait five full days after the exposure to take a test.
"If you have high-risk features, such as (a known COVID-19) exposure or symptoms, and it's negative," Cardona says, "either repeat testing the next day or, better yet, just go to your doctor and ...
The median delay for COVID-19 is four to five days [17] possibly being infectious on 1–4 of those days. [18] Most symptomatic people experience symptoms within two to seven days after exposure, and almost all will experience at least one symptom within 12 days. [17] [19] Most people recover from the acute phase of the disease.
For more on COVID-19: Public health experts are warning of a ‘quad-demic’ this winter. Here’s where flu, COVID, RSV, and norovirus are spreading. New COVID vaccines are here. What to know ...