Pfizer stated that they completed their submission to the US drug and food admin for emergency authorisation of Covid 19 booster. 

Moderna on friday claimed that it has requested FDA about its updated boosters for children and adolescnets. 

Pfizer's booster is now available for people above 18. 

While Moderna's vaccine is available for 18 and older.

Moderna told that its authorization application for an updated booster for children ages 6 months to 5 years is expected later this year.

Like the boosters for older people, these updated booster dose also targets the bivalent strain of the virus. 

It also targets the Omicron BA.4 and BA.5 subvariants.