We May Be In a 'Post-Herd Immunity World', says Immunology Expert

Dr. Paul Offit, an expert on infectious disease and immunology, told the Guardian that "We're living in a post-herd-immunity world. I think the measles outbreak proves that. Measles — because it is the most contagious of the vaccine-preventable diseases, the most contagious human disease really — it is the first to come back." Three large outbreaks in Canada, Mexico and the US now account for the overwhelming majority of roughly 2,300 measles cases across the World Health Organization's six-country Americas region, according to the health authority's update this week. Risk of measles is considered high in the Americas, and has grown 11-fold compared with 2024. Only slightly behind, data released earlier this week from the European Centre for Disease Prevention and Control (ECDC) and WHO also noted that measles cases across Europe were up tenfold in 2024 compared to 2023. That data also indicated that the 2024 measles cases in Europe followed a seasonal pattern, which was not previously noted in 2021 through 2023. Of the European cases, which reportedly hit 35,212 for 2024, 87% were reported in Romania. The ECDC said the dip in vaccine rates has impacted the recent spike in measles, with only three countries, Hungary, Malta and Portugal, having coverage of 95% or more for both doses of the measles vaccine. Read more of this story at Slashdot.

May 4, 2025 - 16:47

We May Be In a 'Post-Herd Immunity World', says Immunology Expert

Dr. Paul Offit, an expert on infectious disease and immunology, told the Guardian that "We're living in a post-herd-immunity world. I think the measles outbreak proves that. Measles — because it is the most contagious of the vaccine-preventable diseases, the most contagious human disease really — it is the first to come back." Three large outbreaks in Canada, Mexico and the US now account for the overwhelming majority of roughly 2,300 measles cases across the World Health Organization's six-country Americas region, according to the health authority's update this week. Risk of measles is considered high in the Americas, and has grown 11-fold compared with 2024. Only slightly behind, data released earlier this week from the European Centre for Disease Prevention and Control (ECDC) and WHO also noted that measles cases across Europe were up tenfold in 2024 compared to 2023. That data also indicated that the 2024 measles cases in Europe followed a seasonal pattern, which was not previously noted in 2021 through 2023. Of the European cases, which reportedly hit 35,212 for 2024, 87% were reported in Romania. The ECDC said the dip in vaccine rates has impacted the recent spike in measles, with only three countries, Hungary, Malta and Portugal, having coverage of 95% or more for both doses of the measles vaccine.