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CL · Americas

Hantavirus in Chile.

Chile reports approximately 50–80 confirmed Andes hantavirus cases annually concentrated in the central and southern regions, with seasonal peaks in summer (December–March) when outdoor activity overlaps with peak rodent populations.

HPSAndesCFR 30–35%
Strain
Andes
Syndrome
HPS
CFR
30–35%

Chile reports approximately 50–80 confirmed Andes hantavirus cases annually concentrated in the central and southern regions, with seasonal peaks in summer (December–March) when outdoor activity overlaps with peak rodent populations. The Aysén and Los Lagos regions consistently report the highest incidence per capita. Chile's Instituto de Salud Pública has invested in genomic surveillance and household contact-tracing programs after the 2018 Epuyén household-cluster cross-border event with Argentina. Tourists hiking or staying in rural lodges in the southern lake district make up a notable share of reported cases.

DOMINANT STRAIN
Andes
SYNDROME
HPS
CASE FATALITY
30–35%
RODENT RESERVOIR
Long-tailed pygmy rice rat (Oligoryzomys longicaudatus) in central and southern Chile.

Active and recent clusters

  • Chile · Aysén / Los Lagos — 65 cases, 22 deaths (CFR 33%) · Annual pattern; PAHO 2025 alert + ISP weekly bulletin. Chile reports approximately 50–80 confirmed Andes hantavirus cases annually with seasonal peaks in summer (December–March). Aysén and Los Lagos consistently report the highest incidence per capita. Annual baseline; verify current week at ISP Chile.

Authoritative sources

Frequently asked

Is hantavirus a problem in Chile?

Yes. Chile is part of the Americas hantavirus surveillance footprint, with the Andes strain causing HPS and case fatality typically 30–35%.

What rodent carries hantavirus in Chile?

Long-tailed pygmy rice rat (Oligoryzomys longicaudatus) in central and southern Chile.

Who tracks hantavirus cases in Chile?

Chile Instituto de Salud Pública (ISP); Minsal Chile — Hantavirus.

Related

Disclaimer. Country surveillance figures are floor estimates and reflect what national authorities publish. Always confirm with the cited sources.