#VaccineSafety

A federal advisory committee to the US Centers for Disease Control and Prevention (CDC) has recommended that all Americans—including children, pregnant women, and adults—receive single-dose influenza vaccines that do not contain thimerosal, a mercury-based preservative long scrutinized despite decades of safe use. This move, which could soon lead to an official CDC policy, reflects an ongoing international spotlight on vaccine ingredients and the public’s persistent concern over vaccine safety—a topic with direct relevance for Thailand’s immunization practices and public confidence.

A recent vote by a United States government advisory panel to curtail the use of thimerosal—a mercury-based preservative—in flu vaccines has reignited controversy over vaccine safety and the legacy of discredited autism claims. The vote, which followed a presentation by prominent vaccine critics now serving in government, illustrates how decades-old debates over vaccine ingredients continue to influence public health policy, even as the global consensus remains firm on vaccine safety.

A prominent psychiatrist has expressed deep remorse over his role in transforming the landscape of autism in America—a change that saw US autism rates leap from 1 in 2,000 children in the 1980s to approximately 1 in 31 today. The surge, he says, is largely attributable to expanded diagnostic criteria introduced in the 1990s and further broadened in the 2010s, with far-reaching consequences for families, public health policy, and social attitudes across the globe—including in Thailand.

The safety and efficacy of mRNA vaccines have returned to the spotlight following new regulatory actions and heightened public debate, but the scientific community continues to reaffirm their vital role in combating the COVID-19 pandemic. Recent scrutiny, triggered by policy changes from the U.S. Food and Drug Administration (FDA), is prompting fresh discussion amid persistent misinformation and growing public concerns—even as evidence underscores overwhelming benefits for both individuals and public health at large (ABC News).

Thailand, like many countries worldwide, is witnessing increased public concern as reported cases of autism rise steeply each year. However, recent research and leading international experts contend that this apparent surge in autism diagnoses may not reflect a true rise in the prevalence of autism itself, but rather the product of social, medical, and diagnostic transformations over recent decades (BBC).

The significance of understanding these trends cannot be understated for Thai parents, educators, and healthcare professionals. Against a backdrop of growing public discussion and sometimes anxiety over neurodevelopmental disorders, clear and accurate information about autism spectrum disorder (ASD)—its causes, diagnosis, and support—remains critical for societal awareness, policy planning, and resource allocation.