Smallpox epidemic spreads from San Francisco to British Columbia

Background. Prior to 1862, Pacific Northwest Indigenous peoples experienced recurring smallpox epidemics roughly once per generation since late 18th-century contact. By 1862, Victoria's colonial population had grown significantly to 4,000–5,000. The disease arrived via steamships from San Francisco, with infected passengers reported in March. Colonial authorities implemented quarantine and vaccination for settlers, but fewer protective measures were extended to Indigenous communities, setting the stage for widespread transmission.

Colonial Response. Colonial authorities focused on containing smallpox among settlers through vaccination and quarantine. The Daily British Colonist called for government action in late March. However, Indigenous peoples were largely excluded from these protections. Instead, infected First Nations were evicted from Victoria and forced to return to their homelands, despite awareness that this would spread the disease along the coast. This policy prioritized settler safety while allowing catastrophic transmission among Indigenous populations.

Indigenous Impact. The epidemic caused devastating loss of life among Indigenous peoples, with death rates exceeding 50% along the coast from Puget Sound to Sitka. Specific communities suffered severely, including 60% of the Heiltsuk and 72% of the Haida. The disease spread unchecked in northern areas lacking prior exposure or vaccines. These losses permanently altered Indigenous societies, leading to demographic collapse, social disruption, and long-lasting political consequences in British Columbia and the northwestern United States.

Long-term Consequences. The epidemic fundamentally changed land tenure in British Columbia. In 1864, Chief Commissioner Joseph Trutch abandoned treaty processes, establishing a precedent for taking Indigenous land by fiat. Settlers occupied depopulated lands, leading to conflicts such as the Chilcotin War. In Haida Gwaii, nineteen villages diminished to four by the early 20th century. The epidemic's legacy includes formal apologies acknowledging the intentional spread of disease and the profound demographic and political shifts resulting from Indigenous depopulation.