Britain said on July 7 the country would provide genomic sequencing support to Brazil, Ethiopia, Kenya, Nigeria and Pakistan to help identify, assess and track new variants of the novel coronavirus.

A third shot of the Oxford-AstraZeneca Covid-19 vaccine produces a strong immune response, researchers said on June 28, adding there was not yet evidence that such shots were needed, especially given shortages in some countries.

The virus that causes Covid-19 could have started spreading in China as early as October 2019, two months before the first case was identified in the central city of Wuhan, a new study showed on June 25.

The University of Oxford is testing the anti-parasitic drug ivermectin as a possible treatment for Covid-19, as part of a British government-backed study that aims to aid recoveries in non-hospital settings.

The Delta variant of Covid-19 – first identified in India – is becoming the globally dominant variant of the disease, the World Health Organization’s chief scientist said on June 18.

Britain agreed a partnership with the United States on Thursday to tackle new pandemics by bolstering disease surveillance and genomic sequencing worldwide, on the eve of a G7 leaders’ summit.

Two doses of the Oxford/AstraZeneca Covid-19 vaccine are around 85 percent to 90 percent effective against symptomatic disease, Public Health England (PHE) said on May 20, citing an analysis of real-world data from the rollout of the shot.

Pfizer’s Covid-19 vaccine generates antibody responses three-and-a-half times larger in older people when a second dose is delayed to 12 weeks after the first, a British study said.

Giving a first dose of Covid-19 vaccine but delaying a second dose among people younger than 65 could lead to fewer people dying of the disease, but only if certain conditions are met, a predictive modelling study showed.

U.S. drugmaker Merck & Co. joined Gilead Sciences Inc. on April 27 in lending support to India as the world’s second-most populous country scrambles to address drug shortages and bring a raging new wave of Covid-19 cases under control.