A mix-and-match approach to COVID-19 vaccines could provide logistical and immunological benefits
Researchers hope that a mix-and-match approach to COVID-19 vaccines will help alleviate these issues and create more flexibility in the immunization regimens available to people.
How long do COVID vaccines take to start working?
The resident had received a first dose of the Pfizer vaccine and reportedly has only mild symptoms, but is being monitored in hospital. The original worker’s son has also tested positive.