In The Face Of Omicron Wave, Public Health Officials Seek To Optimize Timing Of Covid-19 Vaccine Boosters Kyna Bigornia receives her Pfizer Covid-19 booster injection at a vaccination site in Liberty ... [+] Shopping Centre, Romford, East London, as the U.K. government accelerates the booster program to help slow down the spread of the new Omicron variant. Picture date: Thursday December 2, 2021. (Photo by Yui Mok/PA Images via Getty Images) PA Images via Getty Images In the face of a surge of Covid-19 cases of the Omicron variant, the vaccine debate in the U.S., Canada, the U.K., and Europe has turned to boosters for adults. Boosters are considered key to contain Omicron, as third doses offer 75% efficacy against symptomatic disease. Public health officials are seeking to optimize timing of a Covid-19 vaccine boosters. Specifically, they’re trying to figure out what’s optimal in terms of spacing between the second and third doses of vaccine. Differences in scheduling across countries

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