The Communicable Disease Control (CDC)

FILE PHOTO: Vials labelled "COVID-19 Coronavirus Vaccine" and a syringe are seen in front of the Pfizer logo in this illustration taken February 9, 2021. REUTERS/Dado Ruvic/Illustration/File Photo
Coronavirus chronicle

Pfizer, Moderna Covid-19 vaccines highly effective after first shot in real-world use, US study shows

The risk of infection fell 90% by two weeks after the second shot, the study of nearly 4,000 US healthcare personnel and first responders found

Photo: Collected
Coronavirus chronicle

US CDC recommends schools reopen with masks and rigid health protocols

Hannah Osnan, 18, is given a 24-hour rapid coronavirus test by nurse Caren Williams at Tom Bradley international terminal at LAX airport so she can travel to Egypt to see family, as the global outbreak of the coronavirus disease (Covid-19) continues, in Los Angeles, California, US, November 23, 2020. REUTERS/Lucy Nicholson
Coronavirus chronicle

US vaccine plans take shape but no let-up on restrictions

Firefighters spray disinfectant using high pressure pump truck to prevent the spread of coronavirus disease (COVID-19), on the main road in Jakarta, Indonesia, March 31, 2020. REUTERS/Willy Kurniawan
Covid-19 in Bangladesh

CDC asks to stop splashing disinfectants on human body