Almost two months after a severe measles outbreak in Texas was declared over, the disease continues to spread in the United States. The Centers for Disease Control and Prevention (CDC) has confirmed 1,563 cases this year, marking the highest annual count in over 30 years.
However, Dr. Paul Offit, director of the Vaccine Education Center at the Children’s Hospital of Philadelphia, believes the actual number may be significantly higher. He suggests the true figure could be around 5,000 cases based on conversations with public health officials across various states.
For instance, in South Carolina, over 150 unvaccinated schoolchildren are currently under a 21-day quarantine due to potential exposure to measles. The state’s Department of Public Health has reported the eighth confirmed case since late September, but it remains unclear whether this case is linked to prior cases in Spartanburg County.
“This indicates that there is ongoing, unrecognized community transmission of measles,” noted Dr. Linda Bell, South Carolina’s state epidemiologist, emphasizing the necessity for the public to receive measles vaccinations.
Meanwhile, in areas bordering Arizona and southwestern Utah, a serious measles outbreak is also unfolding. Utah has reported 55 cases this year, primarily among unvaccinated individuals, with six needing hospitalization. Wastewater testing indicates that the measles virus is more prevalent in Utah than previously thought. Arizona has logged 63 cases this year.
In Minnesota, a recent surge has increased the state’s total cases to 20.
The CDC has confirmed 44 outbreaks across 41 states this year, defining an outbreak as three or more linked cases. Most cases involve unvaccinated individuals, with 27% of those being children under five. About one in eight cases have led to hospitalization.
Vaccination Vital for Community Protection
Measles is extremely contagious, with an infected person able to transmit it to up to 18 others who are unvaccinated. The virus can linger in the air for two hours, making it highly transmissible.
Before the introduction of widespread vaccination, nearly everyone contracted measles as children, resulting in 400 to 500 annual deaths in the U.S.
Although measles was declared eliminated in the U.S. in 2000, maintaining a vaccination rate of 95% is essential for community immunity against outbreaks. Currently, vaccination rates sit at around 92.5%, a worryingly low figure.
Dr. Adam Ratner, a pediatric infectious disease specialist, points out that the decline in vaccination rates predates the current administration, but recent criticisms of vaccines by public officials complicate matters. He has reservations about the CDC’s recent consideration of separating the MMR vaccine into three parts, which he feels is both impractical and unsupported by evidence.
Parents are understandably confused and alarmed, Ratner reflects, adding that in some areas, kindergarten vaccination rates are significantly lower than the national average. This creates fertile ground for outbreaks, as seen in the Texas outbreak that caused 762 cases and two deaths in Gaines County.
