Source: United States & Canada – South China Morning PostThe US launched a campaign to offer boosters of Pfizer’s Covid-19 vaccine to millions of Americans on Friday even as federal health officials stressed the real problem remains getting first shots to the unvaccinated.“We will not boost our way out of this pandemic,” warned Dr Rochelle Walensky, director of the Centres for Disease Control and Prevention – even though she took the rare step of overruling the advice of her own expert panel to make more people eligible for the booster.The vast…Read More