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flu.  Epidemiological activity decreased with decreasing trend and incidence

flu. Epidemiological activity decreased with decreasing trend and incidence

The epidemiological activity of influenza is trending downward in Portugal, according to the Instituto Nacional Doutor Ricardo Jorge (INSA), indicating a low incidence of influenza syndrome to 8.0 per 100,000 population.

According to the Influenza Epidemiological Bulletin for the period between April 25 and May 1 (week 17), the incidence of acute respiratory infection (ARI) followed the decline and also decreased to 8.0 per 100,000 population. (8.8 in the previous week).

According to INSA, only one case of influenza (influenza A) per week under analysis was reported by 19 intensive care units (ICUs). The patient was 74 years old, had comorbidities and was vaccinated against seasonal influenza.

Since the start of the season, 26 cases of influenza have been reported by intensive care units cooperating in surveillance, all due to influenza A virus.

As for the wings relaying information, since the beginning of the season 19 influenza cases have been reported, all equally due to influenza A.

In the 2021/2022 season, the laboratories of the Portuguese Network of Laboratories for Influenza Diagnostics (hospitals) recorded 100,116 cases of respiratory infection and 6,266 cases of influenza.