Top Story May 10, 2021 KARACHI: Reviewing the national guidelines for the use of AstraZeneca’s Covid-19 vaccine AZD1222 within 24 hours, the federal health authorities on Sunday said use of coronavirus (Covid-19) Oxford-AstraZeneca vaccine among less than 40 years be restricted irrespective of gender (till availability of further data). “(On the recommendations of an expert committee), we have updated the interim guidelines (for the use of AstraZeneca’s Covid-19 vaccine AZD1222) today. There are two key changes: Use among less than 40 years be restricted irrespective of gender (till availability of further data). 2. Interval between doses fixed 12 weeks instead of range of 8-12 weeks mentioned in earlier version,” Director General Health Pakistan Dr Rana Muhammad Safdar told The News on Sunday.