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Vaccine shedding is a form of viral shedding [1] [2] which can occasionally occur following a viral infection caused by an attenuated (or "live virus") vaccine. Illness in others resulting from transmission through this type of viral shedding is rare. [3] [4] The idea of shedding is a popular anti-vaccination myth. [5]
The term is variously used to refer to viral particles shedding from a single cell, from one part of the body into another, [2] and from a body into the environment, where the virus may infect another. [3] Vaccine shedding is a form of viral shedding which can occur in instances of infection caused by some attenuated (or "live virus") vaccines.
For viral infections, viral load and viral shedding are important related concepts. Viral load refers to the quantity of virions (individual virus particles) in a given bodily fluid like blood, saliva, urine, etc. at different moments after infection. Viral shedding refers to the event when a host releases pathogens into their surroundings.
A related term is the duration of shedding or the shedding period, which is defined as the time duration during which a host or patient excretes pathogens through saliva, urine, feces or other bodily fluids. [6] However, for some infectious diseases, the symptoms of the clinical disease may appear after the host becomes infectious.
Many were speculating that the COVID-19 vaccine caused a nurse to faint in the viral video, but new details are clearing up misinformation.
A January 2022 study by the UK Health Security Agency found that vaccines afforded similar levels of protection against symptomatic disease by BA.1 and BA.2, and in both it was considerably higher after two doses and a booster than two doses without booster, [116] [117] though because of the gradually waning effect of vaccines, further booster ...
Dr. Hawkins emphasizes that Avian Influenza can be transmitted through aerosolized particles, meaning infected birds shedding the virus can spread it through the air. “The $50 veterinary word is ...
Data indicates that COVI-VAC is well tolerated, with no significant adverse events reported and that administration of the intranasal vaccine was immunogenic and capable of blocking nasal replication of the virus with minimal viral shedding, recorded at levels lower than those likely to result in subsequent transmission of COVID-19.