COVID-19 immunity 'could last three months after infection or vaccination'

People who receive a COVID-19 vaccination may have immunity for 90 days, the government’s scientific advisers have said. In a paper considered by the Scientific Advisory Group for Emergencies (SAGE), which also looked into the much-discussed concept of immunity certificates, the experts say that the length of immunity from 'natural infection or vaccination is currently not known'. However, they say that 'waning immunity' is believed to partly cause other coronaviruses to reinfect after one to two years.