Smallpox is a contagious disease caused by the variola virus. The disease was eradicated globally as a result of vaccination, with the last naturally occurring case occurring in 1977. It does remain as a potential bioterrorism weapon. Smallpox was transmitted from person-to-person through contact with smallpox sores and through coughing or sneezing. Symptoms of smallpox include a fever and a distinct rash.
To obtain or inquire about an immunization record, or for general immunization information, please contact your local public health unit.
PHO Rounds: International Border Surveillance Study
Arriving international passengers at Toronto’s Pearson International Airport were enrolled in a prospective study of COVID-19 risk upon arrival and during quarantine in September and October 2020.