Vaccination

Used for more than a thousand years, vaccination is the best method to prevent infectious diseases. It has eliminated smallpox, polio, measles and tetanus from most parts of the world. Despite this success, the anti-vaccination movement has many supporters and gained popularity, so much so that experts fear the return of nearly eradicated diseases. At present, several campaigns are underway to vaccinate against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that causes Coronavirus disease 2019 (COVID-19).