Something similar happened in Rio de Janeiro under the supervision of the epidemiologist Osvaldo Cruz during the very same year. Rio was infested with bubonic

Something similar happened in Rio de Janeiro under the supervision of the epidemiologist Osvaldo Cruz during the very same year. Rio was infested with bubonic plague and yellow fever. Oswald started a campaign to get the city rid of mosquitoes and rats including the same idea of buying rats from the population. The result were the same, people began importing rats from neighboring towns and breeding them at home. He later switched the focus into hygiene and sanitation. Cruz is also famous for making vaccination mandatory in Brazil, a decision that led to the infamous Vaccine Rebelion in Brazil: https://en.wikipedia.org/wiki/Vaccine_Revolt https://en.wikipedia.org/wiki/Vaccine_Revolt