States reporting dengue fever outbreaks in Brazil - summary

In the past few weeks, the following states continue to report active transmission of the dengue fever virus:

• Amazonas - affected municipality Tabatinga.
• Santa Catarina - most affected municipality Pinhalzinho.
• Mato Grosso do Sul - most affected municipality Campo Grande.
• Paraná - 82 municipalities reporting cases; most affected municipalities include Maringá, Paranaguá and Londrina.
• Minas Gerais - high levels of dengue virus transmission with significant increase in number of reported cases; many deaths registered in 2016.
• São Paulo - high risk in municipality of Catanduva.
• Distrito Federal (Brasília) - increasing number of reported cases.
• Mato Grosso - death due to dengue haemorrhagic fever in Colíder.
• Rio de Janeiro - affected municipality Angra dos Reis.
• ‎Rondônia - cases reported in Cacoal.
• Espírito Santo - affected municipality Cariacica.
• Rio Grande do Sul - municipality of Horizontina reports cases of dengue.
• Pernambuco - decrease in number of municipalities at risk, but transmission still occurring in many places, including Recife.

Advice

During the summer season, mosquito activity increases with an increased risk of exposure to dengue fever virus in many localities nationwide. The actual risk of exposure will vary from place to place and may be high in many localities.

All travellers to areas where the dengue fever virus is active can reduce their risk of exposure by taking all necessary precautions to avoid mosquito bites. Many persons with dengue fever do not seek medical care and are not reported to health authorities. There may be many more cases in the community than the reports indicate.

Travellers are reminded that transmission of the chikungunya fever virus and Zika fever often occurs where dengue transmission is active, since the same mosquito can transmit all three of these viruses.