Really - Do you check the numbered souses ever?
From below:
CDC, Britannica,
, NIH, etc
Are you trying to dethrone Duhv and most retarded poster in the thread.
Tough job but your looking good.
vaccine
/vakˈsēn/
A
vaccine is a biological preparation that trains the body's immune system to recognize and fight off specific harmful pathogens, such as viruses or bacteria, without causing disease. [
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According to the
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, a vaccine typically contains weakened, killed, or fragmented microorganisms, toxins, or genetic instructions like mRNA. [
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How Vaccines Work
- Exposure: The vaccine introduces a harmless piece or weakened version of a germ into the body.
- Response: Your immune system identifies the foreign substance (antigen) as a threat and produces disease-fighting proteins called antibodies.
- Memory: The immune system remembers the pathogen, allowing it to quickly attack and destroy the real germ if you are exposed in the future. [, , ]
Common Types of Vaccines
- Live-attenuated: Uses a weakened, live version of the germ (e.g., measles, mumps, and rubella vaccine).
- Inactivated: Uses a killed version of the germ (e.g., polio or rabies vaccine).
- Subunit/Conjugate: Uses specific pieces of the germ like proteins or sugars (e.g., hepatitis B vaccine).
- mRNA: Uses genetic code that instructs cells to make a harmless protein piece of the virus (e.g., certain COVID-19 vaccines).
- Toxoid: Uses weakened toxins produced by bacteria (e.g., tetanus vaccine). [, , , ]
