As we have seen, the only way to achieve herd immunity is either through vaccination or exposing people to a disease. However, since COVID-19 is so deadly, herd immunity should only be achieved through widespread vaccination, not by allowing the spread of a disease that could result in unnecessary illness and death.
Scientists still do not know what percentage of people need to be immune to COVID-19 to achieve herd immunity.
Therefore, the main way to fight the disease, save lives, and achieve immunity is through vaccines. Once the majority of the population is vaccinated (including healthy adults, teens, and older children), they will be less likely to contract the virus and transmit it. This will help to provide herd immunity for those who cannot get the vaccine, or develop a natural immunity to the virus.
Herd immunity refers to when a large percentage of people in a community have become immune to a specific infectious disease that the spread of the disease gets significantly slowed down. This is usually achieved through vaccination and natural immunity.
It can certainly be a great help to prevent widespread disease within a country, such as the COVID-19 pandemic. However, since people’s natural immunity against a disease can change or end very quickly, for most people the best way to achieve proper protection against a disease such as COVID-19 is vaccination.