#Vaccine

A groundbreaking U.S. government study has found that a single dose of the human papillomavirus (HPV) vaccine may be just as effective at preventing HPV infection as the traditional two-dose regimen, according to new data presented this week. The findings could dramatically reshape vaccination strategies worldwide, including policies and practices in Thailand, where increasing HPV vaccine uptake remains a crucial public health goal.

The new results, unveiled by U.S. government researchers, have been described by experts as “phenomenal,” underscoring the potential for a single-dose schedule to maintain protection against the most common and cancer-causing strains of HPV. The research, detailed in a highly anticipated STAT News report, adds to growing evidence that simplifying the HPV vaccine protocol could enhance global vaccination rates, lower health care costs, and ultimately save more lives.

Three more US states—Louisiana, Virginia, and Missouri—confirmed their first measles cases of 2025 over the weekend, pushing the current outbreak to over half of all US states and marking one of the most significant resurgences in recent years. According to a report by UPI, the total number of confirmed cases across at least 27 states has climbed to 800, with the vast majority being either unvaccinated or of unknown vaccination status. This growing crisis reflects deeper global trends in vaccine coverage and highlights crucial public health lessons for Thailand, where measles cases have also risen sharply over the last two years (UPI, CDC).

A recent case in the United States is raising alarm among health experts worldwide—including here in Thailand—after a controversial physician contracted measles yet continued to practice medicine, treating children who were never vaccinated against the highly infectious disease. The case, originally reported by Ars Technica, underscored the troubling intersection of vaccine hesitancy and public health, as well as the ongoing risks posed by declining immunization rates among children.

The incident involved an American doctor known for her opposition to vaccine mandates, who was diagnosed with measles after caring for unvaccinated pediatric patients during a local outbreak. Despite clear recommendations from health authorities that infected individuals remain isolated to avoid further transmission, the doctor allegedly kept treating her young patients—many of whom were especially vulnerable to the virus due to their unvaccinated status (source).

Colombia has declared a nationwide health emergency following a sudden and deadly outbreak of yellow fever, with at least 34 deaths and 74 confirmed cases reported so far in 2025, according to official Colombian health authorities (BBC; Reuters). The government’s urgent response underscores growing alarm about the re-emergence of this mosquito-borne virus in a region that had seen virtually no cases in recent years—a trend that should serve as a wake-up call for countries like Thailand, also home to mosquito-borne diseases.

A small American town’s resistance to childhood vaccinations has turned into an international public health warning, as a measles outbreak sweeps through the community, resulting in the deaths of at least two children and serious illness for many more Mirror, Apr 15, 2025. The outbreak inundated local hospitals, rekindled global debates about vaccine misinformation, and now stands as a sobering lesson for countries like Thailand, where vaccine confidence is increasingly challenged by online conspiracy theories and social media rumors.