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Viral shedding is the expulsion and release of virus progeny following successful reproduction during a host cell infection. Once replication has been completed and the host cell is exhausted of all resources in making viral progeny, the viruses may begin to leave the cell by several methods. [1]
Understanding the duration of viral shedding of the SARS-CoV-2 is crucial in controlling the spread of this virus.
Viral shedding is when a person releases copies of a virus from their body. People with COVID-19 infection shed the virus for about 10 days, starting 2 to 3 days before they start to have symptoms. The best ways to prevent spreading the virus that causes COVID include wearing a mask, social distancing, and getting vaccinated.
When a person is infected with a virus, the virus multiplies in the body and can be released into the environment through sneezing, coughing or even speaking. This release is called "shedding" and viral shedding is how COVID-19 is spread from person to person.
Viral shedding can occur following vaccination if the vaccine contains live, weakened viruses because that type of vaccine causes immunity through viral reproduction. Examples of routinely used live, weakened vaccines include measles, mumps, and rubella (MMR); chickenpox; rotavirus; and the intranasal influenza vaccines.
Fears of “viral shedding” and other concerns after the COVID vaccine has led some businesses to ban vaccinated customers from the premises, believing vaccination poses a health risk to others.
What Is Viral Shedding? Viral shedding means that a live virus is still detectable for a period of time after someone is infected with an illness, William Schaffner, MD, an infectious disease specialist and professor at the Vanderbilt University School of Medicine, told Verywell.
Vaccine shedding, or viral shedding, happens when a vaccine releases parts of a virus, resulting in the spread of an infection. Though vaccine shedding can occur, the potential for the...
Vaccinees with mild or asymptomatic infection shed infectious virus 6–9 days after onset or diagnosis, even after symptom resolution. The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variant of concern belonging to the Pango lineage B.1.1.529, known as the Omicron variant, has spread rapidly worldwide (1, 2).
Most of the time, viral shedding of the weakened vaccine virus is not a concern — and it can even be beneficial because it provides contact immunity or indirect vaccination, as experts told us...