The United States is no longer submitting its data on flu cases to the World Health Organization after President Donald Trump signed an executive order on Jan. 20. Scientist Angela

The WHO works with groups such as UNICEF and the Gates Foundation to end polio. The planned withdrawal of the United States from WHO has impacted efforts, including stopping collaboration with the U.S.

He also ordered staff members of the Centers for Disease Control and Prevention to cut off all communications with WHO representatives. In his first week, Trump also issued a stop-work order pending a 90-day review on nearly all programs of the United States Agency for International Development,

Health officials across the United States are on high alert after the country's first reported measles death in nearly a decade, amid a growing number of cases in Texas. The victim was a school-aged child in Texas who was unvaccinated,

The interim guidance document was shared with staff Thursday in the CDC’s National Center for Immunization and Respiratory Diseases, or NCIRD, and specifically its Influenza Division — but it was worded broadly, referring to CDC staff in general in its body text. It’s not clear how many other CDC divisions received the memo.

The United States is abandoning its traditional role as the anchor of the liberal world order — a set of norms, rules, customs and international institutions designed to maintain global stability and foster peaceful interchange between states.

The Utah senator, along with other Republican lawmakers, introduced legislation calling for a ‘complete withdrawal’ from the international organization.

Here are some of the 5,800 contracts the Trump administration formally canceled this week in a wave of terse emails.