Tag is exactly vector
2021-01-24There are a couple of reasons as to why there are different forms of not only the COVID-19 vaccine but of vaccines in general. This is because not much is understood about the COVID-19 virus, so there are multiple vaccines in trial or tested in order to provide as much of a range of protection as possible The two main vaccines use mRNA, which is still relatively new but effective, but the vector vaccines have been used since the 1970s to treat viral diseases Bibliography: CDC. 2020. “Coronavirus Disease 2019 (COVID-19).” Centers for Disease Control and Prevention. February 11, 2020. https://www.cdc.gov/coronavirus/2019-ncov/vaccines/different-vaccines/how-they-work.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fcoronavirus%2F2019-ncov%2Fvaccines%2Fabout-vaccines%2Fhow-they-work.html. “Covid-19 Vaccine Frequently Asked Questions.” 2021. New England Journal of Medicine. 2021. https://www.nejm.org/covid-vaccine/faq?cid=DM108101_&bid=351587577.