globally, scientists around the world are competing against time to fast-track the development of new treatments to combat the disease.
Globally, scientists are developing about 250 candidate vaccines against SARS-CoV-2 infection. Of these, to date, at least 17 are under evaluation in clinical trials.Stay informed with live updates on the current COVID-19 outbreak and visit our coronavirus hub for more advice on prevention and treatment.The authors of the recent study aimed to evaluate the safety and efficacy of a vaccine candidate called adenovirus type-5-vectored COVID-19 vaccine (Ad5-vectored COVID-19 vaccine).