The second-worst Ebola outbreak in history continues to wreak havoc in eastern Congo. As of June 5, the disease had infected 2,031 people and killed 1,367. Nearly one-third of the cases involve children under the age of 18.

The region’s high population and close proximity to Rwanda, Uganda, and South Sudan pose a high risk for the virus to spread. On June 11, health officials confirmed a case in Uganda.

Los Angeles public health officials issued quarantine orders for more than 200 staff and students at two universities this week due to five confirmed cases of measles in the area. The University of California, Los Angeles (UCLA), said 119 students and eight faculty members were under quarantine as of Wednesday. It was not immediately clear how many were quarantined at California State University, Los Angeles.

Outside a doctor’s office in an Orthodox Jewish neighborhood in Brooklyn stood a massive sign that read in Yiddish, “If you have a fever and a rash, or have been exposed to the measles, DO NOT ENTER.” On a train between terminals at New York’s John F. Kennedy International Airport, a city ad campaign showed a picture of a suitcase with the word “Measles” across it.

“Traveling overseas?” the ad read. “You might need a measles vaccine! Measles is spreading in many countries.”

The number of measles cases in the United States has reached its highest level in 25 years, the Centers for Disease Control and Prevention said Wednesday. The count rose to 695 cases from 22 states by Wednesday, up from 626 reported Monday. This year has been the nation’s worst for measles infections since 1994, but no deaths have been reported from the disease so far.

New York City Mayor Bill de Blasio on Tuesday declared a public health emergency and ordered mandatory vaccinations in one neighborhood in response to a measles outbreak. The virus has infected 285 people in Brooklyn’s largely Orthodox Jewish Williamsburg section since September. Anyone working or going to school within four New York ZIP codes must get the measles vaccine, including all children older than 6 months. New York City’s health commissioner is empowered by law to order vaccines in the event of a serious public health threat.

Joni Eareckson Tada, a Christian author and advocate for people with disabilities, has been hospitalized for complications from radiation treatments for breast cancer.

The United States government has quietly resumed funding for certain high-risk viral experiments that regulators had blocked for four years, according to a February report by Science magazine.