This group includes anyone aged 65 and over, said NACI’s updated guidance. Everyone else – ages 12 to 64 – “may be offered” the extra installments in the fall, NACI said. NACI said it would provide recommendations on the type of booster to be given when data are available on multivalent vaccines – which play a leading role in the body’s defense against multiple variants, including Omicron and its subtypes. “Manufacturers are working on new vaccines for COVID-19, including multivalent vaccines and vaccines specifically targeting VOCs [variants of concern]”Although their exact characteristics and time of availability in Canada are not yet known,” NACI said. World Health Organization Director-General Tedros Adhanom Ghebreyesus said in a statement Wednesday that Omicron’s variations BA.4 and BA.5 had caused an increase in the number of COVID-19 cases in 110 countries, “causing an increase in global by 20 percent “. Dr Theresa Tam, Canada’s head of public health, also said these Omicron variants appear to be on the rise in the country. Health officials say three doses of the currently approved vaccines continue to provide good protection against serious COVID-19 disease, hospitalization and death.
