Is flu going around in Czechia?

Czech flu activity usually starts rising in late December, peaks between January and March, and eases by April. The precise window shifts year to year with the dominant influenza subtypes and residual immunity. SZÚ, the State Health Institute (Státní zdravotní ústav), publishes weekly influenza updates through its sentinel ARI/ILI network. Central European climates tend to produce peaks similar in timing to neighbouring Germany, Austria, and Slovakia.

SZÚ describes influenza activity using an ARI/ILI consultation-rate band together with laboratory positivity and severity indicators from hospitals. The weekly picture is expressed qualitatively, from sporadic through regional to widespread, and is also reported to ECDC for the European Respiratory Virus Surveillance Summary (ERVISS). The qualitative framing lets clinicians and the public interpret whether the season is ordinary, elevated, or exceptional.

Czechia's influenza surveillance combines a sentinel network of primary-care physicians reporting ARI and ILI consultations, virological confirmation at SZÚ's National Reference Laboratory for Influenza in Prague, and hospital notifications of severe cases. Weekly bulletins summarise the picture and feed ECDC ERVISS, which places Czechia's trajectory alongside Germany, Austria, Poland, and Slovakia.

Czechia covers seasonal influenza vaccination through public health insurance for defined groups (adults aged 65 and above, residents of long-term-care facilities, people with chronic illnesses, and healthcare workers) with vaccines delivered by GPs and occupational-health services. Other adults can receive the vaccine at their own cost or through employer-sponsored programmes. SZÚ reports vaccine-uptake estimates alongside the weekly surveillance bulletin.

Because Czechia reports into ECDC ERVISS with harmonised indicators, its weekly flu classification is directly comparable with Germany, Austria, Slovakia, Poland, and the rest of the EU/EEA. Central-European countries typically see broadly similar peak windows between January and March. Lead–lag patterns of a few weeks are common and are visible in ECDC's side-by-side dashboards.