![emergency 4 montana mod emergency 4 montana mod](https://i.ytimg.com/vi/JcBAtALE4pA/maxresdefault.jpg)
![emergency 4 montana mod emergency 4 montana mod](https://i.ytimg.com/vi/QsxwR6URIsA/maxresdefault.jpg)
A third dose can be added after 28 days for immunocompromised people in some countries.
![emergency 4 montana mod emergency 4 montana mod](https://i.ytimg.com/vi/WrtZf8OhipY/maxresdefault.jpg)
There is no evidence that a third booster dose is needed to prevent severe disease in healthy adults. Therefore, to avoid deaths where supplies are limited, the WHO recommends delaying the second dose by up to 12 weeks to achieve high coverage of the first dose in high-priority groups. Data show that first dose efficacy persists for up to ten weeks. The World Health Organization (WHO) recommends an interval of 28 days between doses. The initial course consists of two doses. The vaccine is given by intramuscular injection into the deltoid muscle. The Moderna COVID‑19 vaccine is used to provide protection against infection by the SARS-CoV-2 virus in order to prevent COVID‑19.