People are not considered fully vaccinated until two weeks after the second dose of the Pfizer-BioNtech, or Moderna vaccines or two weeks after a single dose of Johnson & Johnson’s Janssen vaccine. There are good data emerging to show that breakthrough asymptomatic infections (COVID-19 infections following vaccination) are uncommon within 10 days (1 in 100) after one dose, and extremely uncommon (1 in 1000) after two doses of an mRNA vaccine (Pfizer or Moderna vaccines). The infections following vaccination are usually mild and do not require hospitalisation. [4]