Flu Incidence Continues to Rise – Prevention Remains Essential

According to the data possessed by National Public Health Centre under the Ministry of Health (NPHC), active spread of viruses causing respiratory illnesses is being recorded in Lithuania. Last week, flu incidence tripled, with children being the most affected. Cases of COVID-19 and other acute upper respiratory tract infections (AURIs) have also increased. Therefore, it is especially important to remember and follow preventive measures: hand hygiene, proper coughing and sneezing etiquette, and vaccination against flu and COVID-19. It is crucial that upon experiencing symptoms, people avoid gatherings, refrain from going to work or educational institutions, so as not to spread viruses and infect others.

In Lithuania, from December 1–7 (week 49 of the year), the combined incidence rate of flu, URTIs, and COVID-19 reached 918.9 cases per 100,000 population (up from 712.0 cases per 100,000 the previous week). The lowest incidence was in Tauragė County, and the highest in Vilnius County. The epidemic threshold was reached in three municipalities: Vilnius City, Vilnius District, and Širvintos District.

A total of 125 people were hospitalized due to flu and 38 people due to COVID-19. Two flu-related deaths were registered: residents of Vilnius and Telšiai Counties, both in the 80–89 age group, both with chronic illnesses. One person was unvaccinated; the vaccination status of the other is unknown. No COVID-19–related deaths were reported.

It is important to remember that vaccination provides the strongest protection against flu and COVID-19. Vaccination is available throughout the season, but it is recommended not to delay, as it takes two weeks to develop immunity — and during this period of increased incidence, the risk of infection is higher. Vaccination is especially recommended for individuals in risk groups, who are vaccinated free of charge by the state. The risk groups include:

• Children aged 2–7
• People aged 65 and older
• All individuals with chronic illnesses
• Residents of social care and nursing institutions
• Healthcare facility workers, including students whose practical training takes place in healthcare institutions
• Pregnant women

Both flu and COVID-19 vaccines may be administered during the same visit. To receive a flu vaccine, you should contact the healthcare facility you are registered with, while vaccination against COVID-19 is available at any healthcare institution that has ordered these vaccines.

More information is available here.

Data on the incidence of influenza, AURI and COVID-19 in Counties

Situation in Europe

According to Week 48 data from the European Centre for Disease Prevention and Control (ECDC), the number of people in EU/EEA countries seeking medical care due to AURIs is increasing, indicating active circulation of respiratory viruses. SARS-CoV-2 continues to spread, but incidence is decreasing across all age groups.

Flu incidence is rising, with most countries reporting increases. Children aged 5–14 are the most affected. In all countries, influenza A is dominant, and in recent weeks the A(H3N2) subtype has had the greatest impact on rising case numbers. In some countries, hospitalizations are increasing; people of all ages are being admitted, but most of them are aged 65 and older.

The spread of respiratory syncytial virus (RSV) is increasing slowly and remains lower than during the same period in the past four seasons. RSV cases have risen among children under 5 years old.

Last updated: 09-12-2025

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