Home Coronavirus COVID-19 Pfizer: 4th Dose of Covid-19 Vaccine Necessary Pfizer: 4th Dose of Covid-19 Vaccine Necessary March 14, 2022 You are unauthorized to view this page. Username or E-mail Password Remember Me Forgot Password RELATED ARTICLESMORE FROM AUTHOR Trump Imposes New Mexican Tariffs US Homeland Security Secretary Outlines Trump’s Demands for Mexico to Avoid Tariffs California-Mexico Border Sees Dramatic Drop in Crossings Mexican Peso Weakens After Trump Announces Auto Tariffs U.S. Deploys Second Warship Near Mexico as Border Security Tightens