Surge in Measles Cases in the U.S. Raises Alarm Among Health Experts

The United States is experiencing a troubling surge in measles cases, exceeding 1,100 in just two months. Public health experts attribute this alarming trend to low vaccination rates, particularly among children. The CDC reports that the largest outbreak is centered in South Carolina, where vaccination rates are critically low. Measles, a highly contagious virus, poses serious health risks, including severe complications and even death. Health authorities stress the importance of the MMR vaccine in preventing this disease and protecting vulnerable populations. As the situation escalates, the call for increased vaccination efforts becomes more urgent.

By Narendra Chaudhary Feb 28, 2026, 08:12 IST

Measles Cases Reach Alarming Levels

In the United States, measles cases have exceeded 1,100 within the first two months of this year, marking a concerning trend that health officials attribute to declining vaccination rates. According to the Centers for Disease Control and Prevention (CDC), there have been 1,136 confirmed cases, which is six times the average annual figure. Over half of the states have reported at least one case, with several significant outbreaks occurring nationwide. The data indicates that approximately 96% of this year's cases involve individuals who are either unvaccinated or have not received both doses of the measles-mumps-rubella (MMR) vaccine. Notably, more than 80% of the cases are among children and teenagers, with about 25% affecting those under five years old. The CDC warns that for every 1,000 children infected with measles, up to three may die, and one could develop encephalitis, a severe brain inflammation.

South Carolina's Outbreak

South Carolina has the largest number of cases

The CDC reports that the most significant outbreak is occurring in the upstate region of South Carolina, particularly in Spartanburg County, where vaccination rates are alarmingly low. Since the outbreak began in October, South Carolina has recorded at least 979 cases, making it the largest measles outbreak in the U.S. in over three decades. Severe complications, including pneumonia and encephalitis, have been documented, and several pregnant women have needed protective treatment after exposure. Fortunately, no fatalities have been reported in the state. Other states, including North Carolina, Washington, and California, are also experiencing high case numbers.

Understanding the Dangers of Measles

Why is measles so dangerous?

Measles is an extremely contagious respiratory virus caused by the measles virus. It spreads through respiratory droplets when an infected person coughs or sneezes and can remain airborne for up to two hours. Initial symptoms of measles typically include:

High fever
Cough
Runny nose
Red, watery eyes

A few days later, a red rash usually appears, starting on the face and spreading downward. Some individuals may also develop Koplik spots, which are small white spots inside the mouth that are indicative of measles. While many recover, measles can lead to severe complications such as pneumonia, encephalitis, hospitalization, and even death, especially among young children, pregnant women, and those with weakened immune systems.

Preventing Measles

How can measles be prevented?

Health professionals emphasize that the most effective way to prevent measles is through the MMR vaccine. Two doses of this vaccine are approximately 97% effective in preventing measles infection. Health authorities recommend the following vaccination schedule:

First MMR dose at 12–15 months
Second dose at 4–6 years
Vaccination for unvaccinated adults at risk

Experts highlight that achieving high vaccination rates not only protects individuals but also fosters herd immunity, safeguarding vulnerable populations who cannot receive vaccines.