# Northern Europe influenza vaccine supply delays

> Live situation record from CLSTR: https://clstr.news/situations/northern-europe-influenza-vaccine-supply-delays
> Updated: 2026-10-07T14:13:06.000Z. Sources: 8. Developments: 2.

In late 2026, Lithuania and Latvia reported delays in the delivery of state-funded seasonal influenza vaccines. 

In Lithuania, officials projected that deliveries to medical institutions would be delayed until November. Manufacturers cited a prolonged process for updating vaccine compositions to meet World Health Organization recommendations for the 2026–2027 Northern Hemisphere season, alongside a shortage of necessary reagents. The Lithuanian Ministry began collaborating with international bodies, such as the European Medicines Agency and the Health Emergency Preparedness and Response Authority (HERA), to assess the impact.

Similarly, Latvia experienced a slowdown in vaccine supplies due to a delay in receiving information regarding required influenza virus serotypes. While the monitoring season for respiratory infections has commenced with relatively low infection rates, the rollout of vaccinations is occurring gradually. Specific vaccines, such as the intranasal ‘Fluenz’ for children and ‘Efluelda’ for seniors, have begun distribution, while other target groups await deliveries expected in mid-November.

## Claims

- The 2026-2027 influenza and other acute respiratory infection monitoring season has begun in Latvia. (corroborated by 3 sources)
- Influenza and other acute respiratory infection prevalence is currently lower than in the same period of the previous season. (corroborated by 3 sources)
- Influenza vaccine production in Europe was delayed due to late information regarding the required virus serotypes. (corroborated by 2 sources)
- The intranasal vaccine 'Fluenz' has arrived in Latvia for children aged 2 to 17 in high-risk groups. (corroborated by 2 sources)
- Deliveries of the 'Efluelda' vaccine for individuals aged 60 and older or those with immunosuppression are starting this week. (corroborated by 2 sources)
- The 'Vaxigrip' vaccine is expected to arrive in Latvia by November 13. (corroborated by 2 sources)
- During the first week of monitoring, influenza was clinically identified in three patients, representing 3.9 cases per 100,000 inhabitants. (corroborated by 2 sources)
- Health officials recommend receiving influenza vaccinations in late October or early November. (single source)

## Timeline

### 2026-10-07: Latvia begins influenza monitoring season amid vaccine delays

Latvia has begun its 2026-2027 influenza monitoring season. Vaccine deliveries are delayed due to European production issues, with various vaccines arriving gradually for different risk groups.

5 sources. https://clstr.news/cluster/latvia-begins-influenza-monitoring-season-amid-vaccine-delays

### 2026-09-20: Lithuania faces delays in seasonal influenza vaccine deliveries

Lithuania expects a delay in seasonal influenza vaccine deliveries until November due to updated virus strain compositions and reagent shortages affecting European suppliers.

3 sources. https://clstr.news/cluster/lithuania-faces-delays-in-seasonal-influenza-vaccine-deliveries

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Cite as: Northern Europe influenza vaccine supply delays. CLSTR, https://clstr.news/situations/northern-europe-influenza-vaccine-supply-delays