Booster doses of current vaccines may not be enough: WHO

by IANS |

Geneva, Jan 12 (IANS) The World Health Organisation (WHO) has said that current Covid-19 vaccines may need to be updated if they are to provide continued protection against emerging variants, including Omicron.

WHO's Technical Advisory Group on Covid-19 Vaccine Composition (TAG-CO-VAC), a group of 18 experts, on Tuesday said that although current vaccines provide a high level of protection against severe disease and death caused by Variants Of Concern (VOC), future vaccines that can prevent infection and transmission need to be developed.

In the meantime, the composition of current Covid-19 vaccines may need to be updated in order to protect against the evolution of the virus, Xinhua news agency reported.

Such updates need to be based on strains that are genetically and antigenically close to the circulating variants. They should also elicit "broad, strong, and long-lasting" responses in order to "reduce the need for successive booster doses," WHO added.

The experts have encouraged Covid-19 vaccine manufacturers to provide data on the performance of current and Omicron-specific vaccines, to help decide when changes to vaccine composition may be required.

Regarding the current Omicron variant, the experts emphasised the importance of wider global access to current Covid-19 vaccines.

Latest News
Global Covid caseload tops 357.9 mn Wed, Jan 26, 2022, 11:42 AM
TN celebrates 73rd Republic Day with patriotic fervour Wed, Jan 26, 2022, 11:39 AM
Participants of Oslo talks call for understanding, cooperation on Afghanistan Wed, Jan 26, 2022, 11:36 AM
2nd ballot to elect Italy's Prez fails, but strong candidatures start emerging Wed, Jan 26, 2022, 11:29 AM
US House Speaker Pelosi announces reelection bid in 2022 midterms Wed, Jan 26, 2022, 11:29 AM
US warns of fragile semiconductor supply chain as chip inventory falls Wed, Jan 26, 2022, 11:28 AM
France reports new daily record of over 500,000 Covid-19 cases Wed, Jan 26, 2022, 11:27 AM
Ironic when nation recognizes Azad's services, Cong doesn't: Sibal Wed, Jan 26, 2022, 11:21 AM
TN to restore water bodies for recharging groundwater level Wed, Jan 26, 2022, 11:20 AM
Blackmailed on Instagram, man commits suicide in Karnataka Wed, Jan 26, 2022, 11:09 AM
Karnataka launches 'Brain Health Initiative' to help people beat Covid stress Wed, Jan 26, 2022, 11:07 AM
Rajpath brims over with patriotic fervour as India celebrates R-Day Wed, Jan 26, 2022, 11:06 AM
India's Tokyo Games heroes come together to recite National Anthem Wed, Jan 26, 2022, 11:05 AM
Afghanistan complete whitewash to grab crucial Cricket World Cup Super League points Wed, Jan 26, 2022, 11:02 AM
Kerala Minister unfurls Tricolour upside down in Kasargod Wed, Jan 26, 2022, 11:01 AM