Why aren’t all vaccines 100% effective?
Why aren’t all vaccines 100% effective?
In this page you will find – Why aren’t all vaccines 100% effective?
Vaccines are designed to generate an immune response that will protect the vaccinated individual during future exposures to the disease. Individual immune systems, however, are different enough that in some cases, a person’s immune system will not generate an adequate response. As a result, he or she will not be effectively protected after immunization.
Why aren’t all vaccines 100% effective?
That said, the effectiveness of most vaccines is high. After receiving the second dose of the MMR vaccine (measles, mumps and rubella) or the standalone measles vaccine, 99.7% of vaccinated individuals are immune to measles. The inactivated polio vaccine offers 99% effectiveness after three doses. The varicella (chickenpox) vaccine is between 85% and 90% effective in preventing all varicella infections, but 100% effective in preventing moderate and severe chicken pox.
How do vaccines work? Do they work against viruses and bacteria?
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Why aren’t all vaccines 100% effective?
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