U.S. measles cases reach highest level in 35 years

There have been 2,318 reported measles cases in the United States in the year 2026, making it the highest case count reported since 1991, as stated by the Centers for Disease Control and Prevention.

The low immunization rates among children have been cited as the cause of this problem, leading to measles outbreaks in 45 states and Washington D.C.

The Outbreaks Are Spreading Across the Nation

As per the CDC, 2,302 cases have been identified in U.S. jurisdictions, and another 16 cases in foreign travelers. While measles is said to be eradicated in America since 2000, which means that the disease was no longer transmitted in the nation in a continuous manner, the recent outbreak has undone all the hard work done over the past few years. Large outbreaks in South Carolina, Utah, and Arizona constitute a majority of the current number of cases, and other states too have witnessed some small outbreaks.

According to health experts, this increase in numbers is especially disturbing since there are still five months left before the end of the year. "Reaching this milestone is particularly noteworthy because we are only in July," William Moss, professor of epidemiology at Johns Hopkins Bloomberg School of Public Health, said in an interview with Reuters.

Failing Vaccination Rates Raise Concerns

This outbreak has mostly been attributed to low vaccination levels. The current vaccination levels among kindergarteners are at 92.5% against MMR vaccines, below the recommended 95% that is required in order to stop transmission of this disease through herd immunity.

Measles is one of the most contagious viruses there is. According to the CDC, it is transmitted through coughing and sneezing and remains airborne up to two hours after. Measles causes fever, cough, runny nose, red eyes and a body rash, which are the common symptoms. Severe cases may lead to pneumonia, brain inflammation and hospitalization.

Children Face the Greatest Risk

Children have been the worst affected in the ongoing measles outbreak. About 70% of cases recorded have been in individuals below 20 years, while about one in ten children under the age of five who were diagnosed with the disease in 2026 had to be hospitalized for treatment. There have been no cases of death resulting from the disease so far in the year 2026 in the United States.

It is still recommended that parents get their children vaccinated with two doses of the MMR vaccine. Health authorities from other countries plan to reconsider the measles elimination status of the United States, depending on the situation, in the coming months.