 the university of guyana and the university of guyana s alumni association present sars cov2 viral physiology and vaccine development by vidia roopchand principal research scientist pfizer on friday august 27 2021 at 1700 hrs via zoom the university of guyana and the university of guyana s alumni association present sars cov2 viral physiology and vaccine development by vidia roopchand principal research scientist pfizer on friday august 27 2021 at 1700 hrs via zoom andydindial mon 8232021 1105 the university of guyana and the university of guyana s alumni association present sars cov2 viral physiology and vaccine development by vidia roopchand principal research scientist pfizer on friday august 27 2021 at 1700 hrs via zoom  