The Ministry of Public Health reports that 5 positive cases of hantavirus infection have been registered in the province since the beginning of 2021. Of the total number of people affected by the virus, there was one death. The infected people reside in Oran, Colonia Santa Rosa, General Mosconi and Hipólito Yrigoyen. Three of the patients are female and two are male. Epidemiological surveillance is the same as for mosquito-borne diseases. In a nonspecific acute febrile case, laboratory studies are performed for dengue, Zika, chikungunya, hantavirus, and other arboviruses.