Am 18. August 2026 trat der Notfallausschuss für die Ebola-Bundibugyo-Virus-Krankheit (BVD) Epidemie in der Demokratischen Republik Kongo zum zweiten Mal zusammen, um die Lage gemäss den Internationalen Gesundheitsvorschriften (2005) neu zu bewerten. Das Risiko wurde wie folgt eingestuft:

Sehr hoch für Länder mit einer Übertragung der BVD innerhalb der Bevölkerung: D.R. Kongo
Hoch für Länder, deren Landgrenzen an Länder mit einer Übertragung der BVD innerhalb der Bevölkerung angrenzen: Angola, Burundi, die Zentralafrikanische Republik, die Republik Kongo, Ruanda, der Südsudan, Tansania, Uganda und Sambia.
Gering für den Rest der afrikanischen Region sowie alle anderen Länder ausserhalb Afrikas.

Für Reisende aus Europa stufte das ECDC das Risiko als sehr gering ein, sofern die Vorsichtsmassnahmen (siehe unten unter „Auswirkungen für Reisende“) befolgt werden. Aktuelle epidemiologische Informationen finden Sie im WHO-Dashboard und beim ECDC.

   

In 2025, Chile reported 11’155 syphilis cases (55.2 per 100’000 population), the highest notification rate recorded between 2016 and 2025 and 2.4 times the 2016 rate. Between 2021 and 2025, men accounted for approximately 65% of cases, and adults aged 20–39 years for 58%. A marked increase was observed among men aged ≥60 years: reported cases more than doubled from 419 in 2021 to 909 in 2025 (50.8 per 100’000).

The number of malaria cases among airport workers at the Frankfurt Airport has increased to six cases: Five cases developed symptoms in early July and one in mid-August 2026. Two died - one in July, with malaria diagnosed post-mortem, and one in August - while the remaining four have recovered. All cases involved airport personnel working in administration, technical operations, or cargo/aircraft handling with no travel history to malaria-endemic area.

 

Investigations are ongoing. The presumed source of infection is one or more Anopheles mosquitoes imported aboard an aircraft arriving from a malaria-endemic region.

The Swiss Expert Committee for Travel Medicine has updated the list of countries with chikungunya transmission risk based on CDC country list and epidemiological news (red = changes since the previous update of 16 July 2026).

 

D.R. Kongo: Der Ausbruch der durch das Bundibugyo-Virus verursachten Krankheit in der Demokratischen Republik Kongo ist von einer intensiven und anhaltenden Übertragung geprägt, was ihn zum bislang grössten und sich am schnellsten ausbreitenden Ebola-Ausbruch des Landes macht. Ursprünglich war er auf die Gesundheitszone Mongbwalu in der Provinz Ituri beschränkt, hat sich jedoch mittlerweile auf 54 Gesundheitszonen in sechs Provinzen ausgebreitet. Im Zeitraum vom 3. bis 9. August 2026 wurden rekordverdächtige 579 Fälle und 304 Todesfälle gemeldet. Unsicherheit, Vertreibung der Bevölkerung und grenzüberschreitende Bewegungen behindern die Bekämpfungsmassnahmen und erhöhen das Risiko einer weiteren Ausbreitung. Die nationalen Behörden, die WHO und ihre Partner verstärken ihre Massnahmen erheblich, um diesen Gesundheitsnotstand von internationaler Tragweite einzudämmen.

Uganda: Am 28. Juli 2026, 12 Tage nach Entlassung des letzten Patienten, erklärte das ugandische Gesundheitsministerium den Ebola-Ausbruch für beendet. Insgesamt waren 20 bestätigte Fälle, darunter zwei Todesfälle, gemeldet worden.

Stand: 18. August 2026; aktuelle Informationen finden Sie unter Dashboard und ECDC.

   

As of 17 August 2026, the CDC had recorded 15’716 domestically acquired, laboratory-confirmed cyclosporiasis cases across 47 states, including 828 hospitalizations and two deaths. Of these, 9’481 cases in 17 states were epidemiologically linked to Taylor Farms de Mexico iceberg lettuce recalled on 17 July.

 

Michigan remains the epicenter, reporting 13’909 cases, 314 hospitalizations and two deaths as of 13 August. Its higher figure includes all reported state cases, including infections not yet assigned to the lettuce-associated cluster and cases delayed by a laboratory backlog. Illness onsets have continued into August, although Michigan reports a declining trend in new infections.

Florida: At least 10 locally acquired cases have been reported in Florida with onset of symptoms in July/ August: 8 cases in Hillsborough County and 2 cases in Pinellas County.  On 08 Aug 2026, Florida’s arbovirus surveillance report recorded 65 travel-associated dengue cases with illness onset in 2026. Northern

 

Virginia: Virginia confirmed its first documented locally acquired dengue case on 4 August 2026 in a Northern Virginia resident with no recent travel outside the state. Authorities suspect that transmission originated from a separate travel-associated case diagnosed approximately two weeks earlier, with local mosquitoes subsequently transmitting the virus.

The US Centers for Disease Control and Prevention (CDC) has issued a Level 2 travel alert for Zika in Bali, Indonesia, following reports of infections among returning travellers. The CDC has not published an exact case count. The following countries have reported travel-associated Zika cases among travellers returning from Indonesia in 2026:

• France: 4 cases detected from January to March 2026. These formed part of 11 cases identified between July 2025 and March 2026, mostly following travel to Bali and neighbouring islands, ECDC
  
• United Kingdom: 4 cases between January and June 2026. Indonesia was the most frequently reported country of exposure among the UK’s eight imported Zika cases, UKHSA
  
• New Zealand: 1 case reported during surveillance week 30, following travel to Indonesia.
  
• US: no case number provided, LINK.
  
• China: 1 case in a returning traveler after a stay in Jakarta in February 2026, PCR confirmed, LINK.

Spain: Six measles cases have been confirmed in Mallorca in unvaccinated persons, representing the first cases reported in the Balearic Islands in 2026. The outbreak was identified on 7 August and linked to a paediatric tourist from another European country who attended the emergency department at Son Espases Hospital on 19 July. Secondary cases developed symptoms from late July onwards.

 

Sweden: On 17 Aug 2026, Swedish health authorities reported 19 measles cases linked to the Urkult festival in Näsåker (30 Jul–1 Aug), mostly among children under 18 years. Cases have been reported across several Swedish regions. As the festival attracted visitors from Sweden and other EU countries, further spread is possible.