Religious exemptions allow vaccination decline, measles outbreaks, in schools

The U.S. is experiencing a significant resurgence of measles, with nearly 1,600 cases and three deaths reported in 2025, marking the highest incidence in 30 years, primarily driven by declining vaccination rates. This public health challenge is concentrated in areas like South Carolina, where increased religious exemptions have led to immunization rates falling below critical thresholds in schools, exemplified by some institutions reporting over 80% religious exemptions. This trend poses potential implications for healthcare sector performance, pharmaceutical demand for vaccines, and broader economic stability through impacts on labor force health and public health policy.

Analysis

The United States is experiencing a significant resurgence of measles, with nearly 1,600 cases and three deaths reported in 2025, marking the highest incidence in over 30 years and the first deaths in a decade. This public health challenge is primarily concentrated in areas like South Carolina, where a dozen cases were identified in Spartanburg County as of October 15, reversing the 2000 elimination status of measles in the U.S.

The primary driver behind these outbreaks is declining vaccination rates, largely attributed to increased religious exemptions for school-mandated immunizations. For instance, Global Academy of South Carolina reported 82% of its 605 students had religious exemptions in the 2024-25 school year, with only 17% fully immunized, significantly below the 95% threshold required to prevent outbreaks. Statewide, South Carolina's immunization rate declined to 93.5% last year from 95.9% in 2020-21, while national nonmedical exemptions for kindergarteners rose to 3.4% from 1.4% in 2010-11.

This public health development carries implications for the healthcare sector, potentially increasing demand for diagnostic services and acute care, while also highlighting the critical role of vaccine manufacturers. The sustained decline in immunization rates could necessitate policy responses, impacting regulatory frameworks concerning public health and school attendance. Furthermore, the risk of outbreaks of other vaccine-preventable diseases, as noted by state epidemiologists, suggests broader public health system strain and potential economic stability concerns through labor force health.

Key Decisions for Investors

• Investors should closely monitor healthcare sector performance, particularly companies involved in infectious disease diagnostics, treatment, and vaccine development, as increased outbreaks could drive demand.
• Evaluate potential regulatory shifts in public health policy regarding vaccine mandates and exemptions, which could influence school enrollment, public health budgets, and pharmaceutical market dynamics.
• Factor in the long-term economic implications of declining public health, including potential impacts on labor force productivity and regional economic stability in affected areas.