April 19, 2021

Lonnie Listonsmith

Experienced Health Expert

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1 min read

MEXICO CITY __ Mexican President Andrés Manuel López Obrador posted a video Thursday saying he had tested negative on an antigen test, after testing positive for COVID-19 about 12 days ago.

“I am well now,” López Obrador said, walking down a flight of stairs in the National Palace to prove his point. He did not say when he would end his isolation and return to public appearances.

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The country posted a near-record daily COVID-19 death toll of 1,682 Thursday, bringing the total to 162,922. Authorities also announced that about five cases of the U.K. variant had been found in Mexico, some apparently through local transmission.

Health experts say the U.S. is behind in detecting dangerous coronavirus mutations. Study finds 21.4% of adults in India had coronavirus. WHO team in Wuhan says discussions open, meetings frank. Gulf Arab states launch new restrictions over virus fears. Many small businesses owners face a tough decision on whether and when to take on employees. The coronavirus has hit parts of east

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Volunteers are being sought for a world-first trial to establish the efficacy of giving people a first dose of one vaccine and a second dose of a different vaccine.



a hand holding a remote control: Photograph: Matthew Horwood/Getty Images


© Provided by The Guardian
Photograph: Matthew Horwood/Getty Images

The trial, which is being run by Oxford University and is funded by the government’s vaccine taskforce, has been described by ministers as “hugely important”.

It will recruit 820 people over the age of 50 who have not yet had a vaccine, to receive a first dose of either the Oxford/AstraZeneca vaccine or the Pfizer/BioNTech vaccine. Some people will then get an

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LONDON, Feb 4 (Reuters) – Britain on Thursday launched a trial to assess the immune responses generated if doses of the COVID-19 vaccines from Pfizer Inc and AstraZeneca Plc are combined in a two-shot schedule.

The British researchers behind the trial said data on vaccinating people with the two different types of coronavirus vaccines could help understanding of whether shots can be rolled out with greater flexibility around the world. Initial data on immune responses is expected to be generated around June.

The trial will examine the immune responses of an initial dose of Pfizer vaccine followed by a booster

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