Riverside County Reports First Measles Case Since 2018, Warns of International Travel Risk

Riverside County health officials have confirmed the first case of measles in the area since 2018. The individual, an adult residing in eastern Riverside County, has a recent history of international travel and is currently recovering at home. The case is notable as it is the ninth confirmed measles case in California this year, with others reported in counties such as Fresno, Los Angeles, and Orange.

Riverside University Health System — Public Health (RUHS - PH) stated that the adult’s measles vaccination status could not be verified at this time. International travel remains a key factor in the spread of the disease, with health experts advising travelers to ensure their vaccinations are up to date at least two weeks before departure.

California's health officials have noted that international travel has been a significant risk factor for the recent measles cases. Dr. Jennifer Chevinsky, Riverside County’s Public Health Officer, emphasized the need for travelers to confirm their vaccination status before traveling to areas where measles is still circulating. For infants traveling internationally, an early dose of the MMR vaccine is recommended to reduce the risk of contracting the disease.

Measles is a highly contagious virus, spread through respiratory droplets. Symptoms typically begin with a fever, followed by a runny nose, cough, conjunctivitis (pink eye), and a distinct rash that usually appears first on the face and spreads to the body. Those infected are contagious for several days before and after the rash appears.

The California Department of Public Health (CDPH) recommends that all travelers monitor their health for symptoms of measles for up to three weeks after returning from abroad. If symptoms develop, individuals are urged to contact their healthcare provider to avoid further exposure.

The measles vaccination is recommended for infants as young as six months old before international travel. Standard vaccination schedules suggest that children receive one dose of the MMR vaccine at 12 months and a second dose between ages 4 to 6. For adults, especially those traveling to high-risk areas or working in healthcare, two doses of the vaccine are recommended.

To reduce the spread of measles, early detection and self-isolation when ill are essential. This helps protect vulnerable populations, including infants under six months, pregnant women, and individuals with weakened immune systems.

For those in Riverside County looking to get vaccinated, RUHS - PH offers walk-in vaccine clinics, with more information available at www.ruhealth.org/vaccineclinics.