You get the best protection from two doses. Anyone who has had their first AstraZeneca dose, except those who have experienced blood clots with low platelets should get their second dose.
For the AstraZeneca vaccine, side effects are generally less common after the second dose than after the first dose. There have been extremely rare cases of blood clots following the first dose of the vaccine, and an even smaller number of cases following a second dose.
Whilst your first dose of vaccine gives you some protection against severe disease, having your second dose gives you stronger and long-lasting protection against the virus.
How was it made so quickly?
The Covid vaccines have been developed, assessed and independently approved using the same processes that would normally be used to develop a vaccine. They have been through clinical trials involving tens of thousands of volunteers, a testing process which tells us they are safe and effective.
Should I get it now?
Millions of people have now been vaccinated against Covid. The vaccine is the best defence against the virus, so the sooner you're vaccinated, the sooner you’ll begin to protect yourself and your community. Vaccinating as many people as possible should reduce the levels of local infections too.
Will I have side effects?
Like all vaccines, and medicines, there can be side effects, but most are mild and short-term and not everyone gets them. Any side effects following the jab usually last less than a week.