Published: July 22, 2021
Searching for the origin of viruses, including the novel coronavirus now ravaging the world, is an extremely difficult and complicated undertaking prone to many uncertainties. But according to experts, one thing is for sure -- the quest should be underpinned by scientific evidence, rather than politically motivated speculation.
Published: July 09, 2021
Pfizer and BioNTech said they believe a third shot of their current two-dose vaccine has the potential to preserve the "highest levels" of protection against all currently known variants, including Delta, but they are "remaining vigilant" and developing an updated version of the vaccine, media reported.