Latest News About Measles Virus

Here are the latest publicly reported updates on measles as of now.

• United States: The CDC and partner agencies have documented continued measles activity in 2025, with notable increases in cases compared to prior years and outbreaks linked to several states. Reports through mid-2025 show hundreds to over a thousand cases nationally, with the majority of patients unvaccinated or vaccination status unknown, and several hospitalizations and a few deaths cited in outbreaks .
• Global context: WHO and CDC estimates indicate that measles remains a leading vaccine-preventable cause of death when vaccination coverage lapses. Worldwide data for 2023–2024 show millions of cases and ongoing deaths in some regions, though vaccination efforts have reduced deaths substantially over the long term .
• Americas and PAHO: Several countries in the Americas reported outbreaks in 2025, with thousands of cases across multiple jurisdictions and calls for strengthened immunization campaigns and surveillance to close immunity gaps .

What this means for you in Lisbon:

• Local risk remains low if you are vaccinated and maintain routine immunization, but global outbreaks can influence travel-related exposure and importation risk. Check with Portugal’s public health advisories or your local health service for current guidance if you plan to travel to or from high-incidence regions.
• Vaccination is the best protection. Ensure you and your children are up to date with the MMR vaccine according to national schedules.

If you’d like, I can pull the most recent country-specific guidance for Portugal or provide a quick briefing on vaccination recommendations for adults traveling internationally.

Citations:

• Measles updates and outbreak details in the United States from CDC reports and news coverage.[1][2][4]
• WHO/CDC global context and 2023–2024 measles data.[7][9]
• Regional outbreak reporting in the Americas and PAHO guidance.[10]