delta variant vaccines

• Delta variant weakens protection from Pfizer, AstraZeneca COVID-19 vaccines: study

  Those who get infected after two shots of the Pfizer-BioNTech or AstraZeneca vaccine may be of greater risk to others than under previous variants of COVID-19, U.K. study shows

  Health

  Aug 18
• Delta COVID-19 variant as contagious as chickenpox, internal CDC report says

  Delta is more transmissible than the original COVID-19 strain as well as the viruses that cause MERS, SARS, Ebola, the common cold, the seasonal flu and smallpox, the report said.

  World

  Jul 30
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• Delta variant on track to be dominant COVID-19 strain in Europe by August: WHO

  Dr. Catherine Smallwood, senior emergency officer at WHO Europe, warned governments not to lift social distancing measures amid increased transmission.

  World

  Jul 1
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• ‘Extremely high risk’: Hong Kong bans passenger flights from U.K. over Delta variant

  It is the second time that the Hong Kong government has banned flights from the U.K., following a restriction imposed last December.

  World

  Jun 28
• Delta COVID-19 variant becoming dominant strain globally, WHO official says

  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 Friday.

  Health

  Jun 18
• Delta COVID-19 variant: A look at the risks, symptoms and impact on vaccines

  Cases of the B.1.617.2 sub-lineage have been found in all 10 provinces in Canada. Here's what we know so far about this variant of concern.

  Health

  Jun 17