Tuesday, 27 Jul 2021 07:20 AM MYT People line up to receive a dose of the Moderna coronavirus disease vaccine at a mass vaccination site at South Bronx Educational Campus, in the Bronx borough of New York City, New York, US, January 10, 2021. — Reuters pic Follow us on Instagram and subscribe to our Telegram channel for the latest updates. NEW YORK, July 27 — The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for Covid-19. Most with allergy to first mRNA shot can get second dose Most people with allergic reactions to the first dose of an mRNA Covid-19 vaccine from either Pfizer/BioNTech or Moderna can safely receive the second dose, a new study shows.