https://www.epochtimesviet.com/chinh-phu-tt-biden-ky-thoa-thuan-3-2-ty-usd-vaccine-covid-19-voi-pfizer_301933.html?utm_source=ref_share&utm_campaign=mewe&rs=0&
Chính phủ TT Biden ký thỏa thuận 3.2 tỷ USD vaccine COVID-19 với Pfizer