Germany will vaccinate Pfizer or Moderna people under 60 who have not received the first dose of AstraZenecaApril 14, 2021
Babies who get anti-covid antibodies from their mothers through the placenta after birth lose the antibodies within a few monthsApril 14, 2021
This is how traces of covid-19 spread on Twitter before the pandemic broke out TECHNOLOGY April 5, 2021 An analysis of tweets sent in Spain and six other European countries from the end of 2019 to the beginning…
