Anvisa advises those infected with dengue to stay 30 days without donating blood

Anvisa – National Health Surveillance Agency – released a technical note this Tuesday (5) advising that people who have been infected by the dengue virus or who have been vaccinated against the disease must wait at least 30 days to donate blood. The deadline expands to 180 in the case of patients who had dengue hemorrhagic fever.

Other recommendations from the report

In addition to the deadline for donating blood, the technical note also advises that people who have had sexual relations with someone infected with the disease in the last 30 days should wait another 30 days to make a donation. The guidance is the same for vaccinated individuals.

Anvisa issued a warning about the risk of transmission of the dengue virus through blood transfusion, with a transmission rate estimated at around 38%. Given this information, hemotherapy services must guide donors on the procedures to be adopted in case of post-donation contamination. It is essential that donors immediately inform the blood center if they present symptoms such as fever or diarrhea up to 14 days after donation, enabling the identification and monitoring of recipients of the blood material.

State of emergency in São Paulo

The COE – Emergency Operations Center -, coordinated by the State Department of Health, declared a state of emergency in São Paulo due to the high numbers of patients infected by dengue. In 2024, 138 thousand cases and 31 deaths from zoonosis have already been recorded.

“What changes now with the decree is that we can have a little more agility to acquire inputs, hire people, increase our care network. And municipalities can use our decree as justification to declare a state of emergency in their municipalities too“, declared Priscilla Perdicaris, acting Secretary of Health to G1.

_{São Paulo has already recorded 138 thousand cases and 31 deaths from dengue in 2024 (Photo: reproduction/Milton Rodney Buzon/Getty Images/iStockphoto/Governo SP)}

Dengue care

To eliminate breeding sites for dengue mosquitoes (Aedes aegypti) surfaces with standing water should be avoided, such as water tanks, open swimming pools, bottle caps and plant pots.

Featured Photo: Anvisa Headquarters (Reproduction/Marcelo Camargo/Agência Brasil/ Veja SP)