Herd immunity is an effective way to limit a deadly epidemic, but it requires a huge number of people to be immune. The proportion of the population required for herd immunity depends on how infectious a virus is. This is measured by the basic reproduction number, R0, how many people a s...
"I hope that China's vaccination rate could reach 70 percent to 80 percent by early 2022 or even by the end of 2021, thus basically achieving herd immunity," said Gao Fu, director of the Chinese Center for Disease Control and Prevention (CDC). Due to the nature of the virus, the coun...
Population (herd) immunity from natural infectionConsider allowing acquisition of population immunity from natural infection more safely e.g. in young, healthy peopleAccept varying levels of the reproductive rate in different subpopulations e.g. higher in younger people and lower in older peopleAt the...
Report 12 - The global impact of COVID-19 and strategies for mitigation and suppression. London, UK: Imperial College London; 2020. (Open in a new window)Google Scholar Okell LC, Verity R, Watson OJ, et al. Have deaths from COVID-19 in Europe plateaued due to herd immunity? Lancet...
Current CDC estimates suggest that seroprevalence around the United States does not exceed 20%–25% in heavily affected states such as New York and is much lower throughout most of the rest of the country6. While seropositivity alone is not proof of protective immunity, the low overall ...
On the benefits of explain ing herd immunity in vaccine advocacy. Nat Hum Behav. 2017;1 (3):1–6. doi:10.1038/s41562-017-0056 71. Centers of disease control and prevention (CDC). U.S. public health service syphilis study at Tuskegee. Available from: https://www.cdc. gov/tuskegee...
First, we don’t know enough about immunity to COVID-19. Most people who are infected with the virus that causes COVID-19 develop an immune response within the first few weeks, but we don’t know how strong or lasting that immune response is, or how it differs for different people. ...
Reinberg, Steven
2 https://www.cdc.gov/coronavirus/2019-ncov/prepare/transmission. html 3 https://economictimes.indiatimes.com/news/economy/policy/india- needs-to-achieve-herd-immunity-to-effectively-counter-covid-19-swa minathan-aiyar/articleshow/74860557.cms eyes after contacting a surface or object that ...
https://globalnews.ca/news/6704349/us-cdc-report-coronavirus-hospitalized-younger-adults/ This undated articles say 50% of France’s ICU patients are under 60 https://www.healthline.com/health-news/covid-19-isnt-just-dangerous-for-older-adults ...