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Measles Alert: Arizona Workers Monitored in California
3 Aug
Summary
- 150 agricultural workers from Arizona are monitored for measles in California.
- Workers were exposed to the virus due to a major outbreak in Arizona.
- The MMR vaccine offers 97% protection against measles, officials state.

Health officials in California are actively monitoring about 150 agricultural workers who recently arrived from Arizona for potential measles exposure. These individuals are under observation in Fresno, Madera, and Merced counties due to a substantial measles outbreak in the region they departed from.
As more workers are expected to arrive in the coming days, health departments are implementing public health measures. Currently, none of the monitored workers have shown symptoms of the virus, and the risk to the general population is considered low.
Residents experiencing measles-related symptoms, such as cough, runny nose, rash, fever, or red eyes, are urged to consult their healthcare provider. Health experts highlight that the two-dose measles-mumps-rubella (MMR) vaccine is highly safe and effective, providing 97% protection against the disease.