Home Coronavirus COVID-19 WHO: Delta Variant Reduces Vaccine Efficiency to Just 40% WHO: Delta Variant Reduces Vaccine Efficiency to Just 40% November 26, 2021 You are unauthorized to view this page. Username or E-mail Password Remember Me Forgot Password RELATED ARTICLESMORE FROM AUTHOR Pope Francis Dies at 88, Vatican Announces SAVE Act, Which Eliinates Expat Voting, Passes US House Jalisco Strengthens Global Ties Through Tech, Tequila, and Tourism Sheinbaum and Trump Hold Phone Conference U.S. to Impose 21% Tariff on Mexican Tomatoes Starting in July