“But there is a worldwide shortage so that is not going to happen for a while. “If you have a lot of vaccines, which we do not, you would prefer the Pfizer and Moderna vaccine for those under the age of 40 and give AstraZeneca to those who are older than that age. There is obviously the tiny risk of clotting with the AstraZeneca vaccine and that small risk grows the younger the person is,” he said. “Currently any vaccine you can get is good. (November 2021) This articles lead section may be too short to adequately summarize the key points. It appears to have the same efficacy, similar side effects,” he told .ĭr Collingnon added the influx of vaccines will help protect younger people who have largely been at risk during the pandemic. “The only major difference between the two vaccines is that Moderna can be kept at minus 20 degrees rather than minus 70 like the Pfizer. Infectious diseases expert Dr Peter Collignon said the US-made Moderna is very similar to the Pfizer vaccine.

A health worker prepares a dose of the Moderna vaccine against in Honduras. Like the Pfizer vaccine, the Moderna COVID-19 vaccine contains an ingredient called polyethylene. Symptoms may include: fever or chills cough shortness of breath fatigue muscle or body aches headache new loss of taste or smell sore throat congestion or runny nose nausea or vomiting.