Disneyland measles outbreak

Overview of the 2014-2015 measles outbreak linked to Disneyland

Disneyland measles outbreak

The Disneyland measles outbreak was a significant public health event that began in December 2014 and continued into 2015. The outbreak was linked to Disneyland Resort in Anaheim, California, and it highlighted the importance of vaccination and herd immunity in preventing the spread of infectious diseases like measles.

Anaheim, California, USA

Background

Measles is a highly contagious viral disease characterized by symptoms such as fever, cough, runny nose, and a distinctive red rash. It is caused by the measles virus, which is transmitted through respiratory droplets. The disease can lead to serious complications, especially in young children and individuals with weakened immune systems.

Young boy with measles

Vaccination with the measles, mumps, and rubella vaccine (MMR) is the most effective way to prevent measles. The Centers for Disease Control and Prevention (CDC) recommends that children receive two doses of the MMR vaccine, which is about 97% effective at preventing measles.

The Outbreak

The outbreak began in December 2014 when several individuals who visited Disneyland Resort in Anaheim, California, contracted measles. The initial cases were traced back to visitors from outside the United States, and the virus quickly spread among unvaccinated individuals.

The outbreak resulted in 147 confirmed cases of measles across multiple states in the U.S., as well as cases in Canada and Mexico. The majority of those affected were unvaccinated or had unknown vaccination status.

Public Health Response

The outbreak prompted a swift response from public health officials. Efforts were made to identify and isolate infected individuals, and public health campaigns were launched to encourage vaccination. The outbreak also reignited debates about vaccine hesitancy and the importance of maintaining high vaccination rates to achieve herd immunity.

Herd immunity illustration

Impact

The Disneyland measles outbreak had a significant impact on public health policy and awareness. It led to increased scrutiny of vaccination laws and policies, particularly in California. In response to the outbreak, California passed legislation (SB 277) in 2015 that eliminated personal belief exemptions for vaccinations required for school entry.

US Measles Cases 2010-2018

Conclusion

The Disneyland measles outbreak served as a stark reminder of the importance of vaccination in preventing the spread of infectious diseases. It highlighted the need for continued public health efforts to promote vaccination and address vaccine hesitancy to protect communities from preventable diseases.

Related pages

• Measles
• Vaccination
• Herd immunity
• Vaccine hesitancy
• Centers for Disease Control and Prevention