Trends in county-level MMR vaccination coverage in children in the United States
Peer-Reviewed Publication
Updates every hour. Last Updated: 18-Jun-2025 08:10 ET (18-Jun-2025 12:10 GMT/UTC)
A new county-level dataset from Johns Hopkins University researchers reveals a national decline in the measles-mumps-rubella (MMR) vaccination rate among U.S. children since the start of the COVID-19 pandemic. Out of 2,066 studied counties, 1,614 counties, 78%, reported drops in vaccinations and the average county-level vaccination rate fell 93.92% pre-pandemic to 91.26% post-pandemic—an average decline of 2.67%, moving further away from the 95% herd immunity threshold to predict or limit the spread of measles.
A team of scientists at NYU Abu Dhabi has developed a breakthrough paper-based diagnostic device that can detect COVID-19 and other infectious diseases in under 10 minutes, without the need for sophisticated lab equipment or trained personnel. The Radially Compartmentalized Paper Chip (RCP-Chip), engineered by researchers at the Advanced Microfluidics and Microdevices Laboratory (AMMLab), offers a fast, affordable, and portable solution for on-site screening of infectious diseases.
Mass General Brigham researchers are shining a powerful new light into the viral darkness with the development of Luminescence CAscade-based Sensor (LUCAS), a rapid, portable, highly-sensitive diagnostic tool for processing complex biological samples. Compared to its diagnostic predecessors, LUCAS creates 500-fold stronger and 8-fold longer-lasting bioluminescence signals, overcoming longstanding challenges faced by point-of-care diagnostics. Their study published today in Nature Biomedical Engineering.
Prior COVID-19 vaccination did not stop the immune system from mounting a protective response to the Delta and Omicron strains, though new mutation-specific antibody production dipped slightly, according to a study led by researchers at the University of Arizona Health Sciences and published in Nature Immunology.
A new study published in JAMA Internal Medicine reveals a concerning decline in self-reported mental health among mothers in the United States between 2016 and 2023. Conducted by researchers at the Columbia University Mailman School of Public Health, the study also found modest but measurable declines in self-reported physical health during the same period.
SARS-CoV-2 persists in the epipharyngeal (a region behind the nasal cavity) mucosa of patients with long COVID. However, the impact of these persistent viral antigens on the epipharyngeal immune response remains less explored. Researchers from Japan have now mapped the immune activation triggered by these SARS-CoV-2 remnants and demonstrated how a simple outpatient procedure—epipharyngeal abrasive therapy (EAT)—can help clear the viral RNA, restore tissue function, and alleviate long COVID symptoms.
In response to the COVID-19 outbreak, precautionary measures were swiftly adopted. While the early pandemic effects were studied extensively, little is known about long-term impacts on vulnerable groups like the elderly. Researchers in Japan analyzed healthcare use and socioeconomic disparities among older adults during the prolonged pandemic. Their findings reveal both resilience and inequality—offering crucial insights into how healthcare systems can adapt to maintain access for aging populations during extended public health emergencies.