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Study: Pfizer COVID-19 vaccine doses more effective with a 12-week gap | World English News | WION
Coronavirus Vaccine: Real world study confirms Pfizer COVID-19 vaccine 94% effective | English News
Pfizer, Moderna vaccines 90% effective after 2 doses, CDC real-world study finds
Coronavirus: Pfizer’s 1st vaccine dose effective enough to delay 2nd, researchers say
Study: Pfizer vaccine effective for people with chronic diseases | ANC
Study shows 2 COVID-19 vaccine doses may be effective against variant from India
EMA: Pfizer, Moderna vaccines effective against COVID-19 variants | COVID-19 Vaccines | Latest News
US: FDA to approve Pfizer COVID-19 vaccine for teens by next week | World News | English News | WION
Study: Pfizer, Moderna vaccines likely produce long lasting immunity
One Virus, Few Treatments, Many Vaccines: An overview of global COVID-19 treatment and prevention.
In-Depth: Delaying the second dose of COVID-19
Children Begin Receiving Pfizer’s Covid Vaccine | NBC Nightly News
