The bacillus Calmette-Guerin, or BCG, vaccine that’s been used to prevent tuberculosis is being given to health-care workers in Melbourne to see if it will protect them against the coronavirus. The shot has been used widely for about 100 years,…
COVID-19 <100yearold class="post-title"> Scientists Investigate 100-Year-Old Vaccine As Possible COVID-19 Treatment | NBC News NOW