Part 1 of this two-part series on injection techniques describes the evidence base and procedure for administering an intramuscular injection. This updates an article previously published in 2018.

When injected intravenously, the vaccine is quickly absorbed into the circulation whereas the intramuscular method takes some time to absorb the vaccine. Everyone that got vaccinated for Covid-19 in ...

While all COVID-19 vaccines administered through the intramuscular route have been found to reduce the chances of symptomatic disease and death, attempts are being made to develop vaccines that can ...