COVID booster efficacy wanes significantly by fourth month: US study
It was likely that fourth doses would more likely be needed for subsets of people who mount weaker immune responses, such as the elderly and immunocompromised.
Tue Feb 15 2022
WHO's advisory panel outlines recommendations for boosters
People who are immunocompromised or received an inactivated vaccine should receive a booster dose of a COVID-19 shot.
Thu Dec 09 2021
New COVID jab offers hope for immunocompromised
The jab, known as CoVac-1 was shown to produce a strong white blood cell or T-cell response in all 36 phase one trial participants.
Wed Nov 24 2021
Gov't agrees to COVID-19 vaccine booster shots, high-risk groups given priority - PM
Ismail Sabri said priority will be given to high-risk groups such as healthcare frontliners and immunocompromised patients.
Sun Sep 19 2021
US authorizes third shot of COVID-19 vaccines for the immunocompromised
Mixing of mRNA vaccines is permitted for the third shot if their original vaccine is not available.
Sat Aug 14 2021
Who are not encouraged to take COVID-19 vaccine?
Individuals who are immunocompromised, autoimmune patients, pregnant women or those breastfeeding are among those not recommended to take the vaccine.
Tue Feb 23 2021