Booster shots likely needed, expert says
Individuals who have been fully vaccinated against Covid-19, as well as those who have fully recovered against the disease, are likely to need booster shots to maintain sufficient protection against reinfection, a virus expert is warning.
Yong Poovorawan, head of the Centre of Excellence in Clinical Virology of Chulalongkorn University, said in a Facebook post on Monday that a study into recovered patients suggested that immunity against Covid-19 begins to decrease around three to six months after being infected.
Wassayos Ngamkham
