Certara's Covid-19 vaccine simulator could help optimise distribution

The Pitch study, conducted at Oxford University, recently found that an interval of eight to ten weeks between doses of the mRNA Covid-19 vaccine developed by Pfizer appears to boost the effectiveness of immunisation compared to a shorter spacing. The UK government drew a lot of criticism following its decision to administer vaccine doses 12 weeks apart at the beginning of its rollout, but stretching out the interval from the three or four week wait faced by study participants appears to have paid off. Nevertheless, incoming data and the threat of the Delta variant prompted a recent decision to cut the time between jabs to eight weeks.