Most people will have to wait months for Pfizer and Moderna vaccine shots to become widely available. Federal officials say the first doses will ship within a day of authorization. By the end of January, HHS officials say, all senior citizens should be able to get shots, assuming a vaccine becomes available by the end of 2020. Rather than prevent infection entirely, the first Covid-19 vaccines might only prevent illness. Covid-19 vaccine trials have to include at least 30,000 people, but the chances of a rare side effect turning up are more likely as growing numbers of people are vaccinated.

Source: New Zealand Herald November 25, 2020 00:31 UTC