US embassy issues health alert for Cuba amid oil blockade, sanctions

A man rests on water tanks as Cuba's grid operator UNE said it had reconnected most of the country to the national grid, though millions remained without power as the country struggles to generate even one-third of current demand amid an ongoing U.S. fuel blockade, in Havana, Cuba, July 7, 2026. REUTERS/Norlys Perez

HAVANA, Sept 4 (Reuters) - ⁠The U.S. embassy in Havana issued a health alert for Cuba on ⁠Friday, warning travelers and residents of a spike in intestinal illnesses and ‌diarrhea caused by failing water and electricity supply, even as the Trump administration continued to hold back fuel shipments necessary for power generation on the island.

"The U.S. Embassy has noted a significant increase in diarrheal ​illness across Cuba, associated with the continuing degradation ⁠of the water and energy infrastructure," ⁠the alert stated. "This degradation affects water supply, and food storage and temperature control."

The U.S. ⁠warning ‌comes nine months after the Trump administration imposed a fuel blockade on the communist-run island, contributing to a sharp spike in power cuts and complicating ⁠refrigeration and sanitary measures in homes and businesses.

U.N.-appointed human rights ​experts have called the ‌Trump fuel blockade a violation of international law. A team of U.N. ⁠experts in August ​warned of a growing risk of disease outbreaks on the island as the U.S. has tightened sanctions.

"The humanitarian consequences are already unfolding into a full-blown crisis, threatening the rights to health, ⁠to life, to food and to development," the ​experts said.

The Trump administration says sanctions are necessary to force a change in the island's government, a decades-long aim of the U.S. following Fidel Castro's 1959 revolution. Trump has called ⁠Cuba a national security threat to the United States.

Residents throughout Cuba have for months complained of rampant illnesses that cause several days of diarrhea, fever and body aches, leaving many bedridden.

During the Caribbean's sultry summer, sleep without air conditioning or a fan ​often becomes impossible, as does food preservation without refrigeration. Blackouts ⁠spanning days have become commonplace amid the U.S. fuel blockade.

The U.S. health alert on ​Friday advised travelers and residents in Cuba to "be cautious ‌of ... perishable foods that may have been ​inadequately stored," and warned against eating "foods that appear to have been sitting at room temperature for extended periods."

(Reporting by Dave Sherwood; Editing by Tom Hogue)