The Brazillian city of Niteroi in Rio-de Janeiro has begun trial of Chinese pharmaceutical company Sinovac made Coronavirus vaccine,
  • AgreeableLandscapeM
    1·
    4 years ago

    Really hope we get a verified working vaccine soon, but what terrifies me is that because people have been shown to be reinfected with COVID-19, will the effects of vaccines for this disease wear off after a while?