A fourth measles case has been confirmed in Los Angeles County, prompting renewed calls from health officials for residents to ensure they are protected against the highly contagious virus.

The infected individual flew from Singapore to Los Angeles International Airport on Feb. 9 aboard Singapore Airlines Flight 38. The plane landed at about 7 p.m. following a 14-hour journey, according to the L.A. County Department of Public Health.

Over the following days, the individual visited a few San Gabriel Valley fast food restaurants, potentially exposing others to the measles virus.

“As measles cases increase, it is important that residents take steps to make sure they are fully protected,” L.A. County Health Officer Dr. Muntu Davis said in a statement. “The [measles-mumps-rubella] vaccine is the safest and most reliable way to prevent measles and protect yourself, your family, and your community.”

The health department did not respond to questions from The Times regarding the sex or age of the infected individual, who was described in a statement as “a resident who recently traveled internationally.”

After arriving at and leaving the Tom Bradley International Terminal, the individual visited restaurants and convenience stores throughout Whittier and Montebello.

The individual ate at a Burger King in Montebello, 1212 West Beverly Blvd., on Feb. 10 between 5:30 and 7 p.m. The next day, the person dined at Taqueria El Atacor, 11156 1/2 Whittier Blvd. in Whittier, between 3 and 5 p.m.

The final two stops in Montebello were at Domino’s Pizza, 803 West Whittier Blvd., between 4 p.m. and 5:15 p.m. on Feb. 12; and 7-Eleven, 1106 West Beverly Blvd., on Feb. 13 between 4:30 p.m. and 5:45 p.m.

Those who were in the Bradley Terminal (Terminal B) on Feb. 9 from 7:30 p.m. to 9:40 p.m., or in the eateries above during the aforementioned time windows, may have been exposed to the measles virus.

Symptoms typically develop anywhere from seven to 21 days after exposure, according to the health department.

Concerned individuals should confirm whether they have protection against the virus, either through past measles vaccinations or infections.

Those who are not immunized or are unsure of their status should monitor themselves closely for signs of infection. Common symptoms include fever, cough, runny nose or red eyes, as well as a rash.

Those with such symptoms are encouraged to stay home and avoid school, work and any gatherings. They should also call a healthcare provider immediately, but not go into a healthcare facility without informing them.

The monitoring deadline for symptoms ranges from March 2 at LAX until March 6 at 7-Eleven for individuals who visited those spaces around the same time as the infected person.

Davis said the most effective way to protect against measles is to take the MMR vaccine. Children age 1 year and older are considered fully immunized after receiving two doses.

“Measles spreads easily and can lead to serious complications, including pneumonia, brain swelling, and even death,” Davis said. “We urge everyone to confirm their immunity and get the MMR vaccine if needed, especially before traveling. Taking this simple step helps safeguard your health and strengthens protection for our entire community.”

Previous cases confirmed in L.A. County so far this year also involved individuals who had traveled internationally. One of those individuals ventured to Sherman Oaks on Jan. 24, another to Woodland Hills on Jan. 30. The first case had no identified public exposure locations in L.A. County.

Measles cases have increased in the United States as vaccination rates have fallen in recent years, allowing the highly contagious virus to spread in communities with lower vaccine coverage.

According to the U.S. Centers for Disease Control and Prevention, there were 2,280 confirmed measles cases in the U.S. last year, the highest annual total since 1991. As of Feb. 12, 910 cases had already been confirmed nationwide this year — including 15 in California.

Shark attacks returned to near-average levels in 2025 after a dip the previous year, according to the latest report from the Florida Museum of Natural History’s International Shark Attack File, published Wednesday.

Researchers recorded 65 unprovoked shark bites worldwide last year, slightly below the 10-year average of 72, but an increase from 2024. Nine of those bites were fatal, higher than the 10-year average of six fatalities.

The United States once again had the highest number of reported incidents, accounting for 38% of global unprovoked bites when assessed on a country by country basis. That said, it’s actually a decline from recent years, including 2024, when more than half of all reported bites worldwide occurred off the U.S. coast.

In 2025, Florida led all states with 11 recorded attacks. California, Hawaii, Texas and North Carolina accounted for the remaining U.S. incidents.

But California stood out in another way: It had the nation’s only unprovoked fatal shark attack in 2025.

A 55-year-old triathlete was attacked by a white shark after entering the water off the coast of Monterey Bay with members of the open-ocean swimming club she co-founded. It was the sole U.S. fatality among 25 reported shark bites nationwide.

It’s not surprising that the sole U.S. shark-related death occurred in California, said Steve Midway, an associate professor of fisheries at Louisiana State University. “In California, you tend to have year-to-year fewer attacks than other places in the U.S. and in the world,” Midway said. “But you tend to have more serious attacks, a higher proportion of fatal attacks.”

The difference lies in species and geography, Midway said. Along the East Coast, particularly in Florida, many bites involve smaller coastal sharks in shallow water, which are more likely to result in nonfatal injuries. California’s deeper and colder waters are home to larger species, such as the great white shark.

“Great whites just happen to be larger,” Midway said. “You’re less likely to be attacked, but if you are, the outcomes tend to be worse.”

Whether measured over 10, 20 or 30 years, average annual shark bite totals globally are actually very stable.

“The global patterns change only slightly from one year to the other,” said Gavin Naylor, director of the Florida Program for Shark Research.

Those annual fluctuations are influenced by a combination of shark biology, ocean conditions and the number of people in the water at any given time in any given place, researchers say.

At the same time, global shark populations remain far below historical levels. Naylor categorizes about 30% of shark species as endangered, largely due to overfishing. In some countries, including the United States and Australia, stronger protections have allowed certain shark populations to recover.

Nevertheless, the risk of being bitten by a shark remains extremely low. The report notes that drowning is a far more common cause of death worldwide — and, if it helps you sleep (or swim), the data show that you are much more likely to be killed by lightning than you are by a shark.