Health officials say delays in giving a second jab should not affect protection. Others say we shouldn’t be taking the risk. What are the facts?
Why have health officials decided to delay giving second doses of Covid-19 vaccines?
According to the Joint Committee on Vaccination and Immunisation (JCVI), modelling of “the high level of protection afforded by the first dose suggests that initially “vaccinating a greater number of people with a single dose will prevent more deaths and hospitalisations than vaccinating a smaller number with two doses”. Delays in giving a second vaccine dose for up to 12 weeks should not affect protection, it is argued. Indeed, it may increase it.
So what protection is offered by first doses of the vaccines?
Short-term efficacy from the first dose of the Pfizer-BioNTech vaccine is around 90%, says the JCVI, while 70% is given for AstraZeneca’s.
Read the original article at The Guardian