Fox News anchor John Roberts is recovering after a recent malaria diagnosis, a serious and potentially deadly illness caused by parasites transmitted through mosquito bites. The 68-year-old journalist shared his experience with PEOPLE Magazine, detailing the intense symptoms he endured, including severe body aches, uncontrollable shivering, and extreme fatigue during a live broadcast.

Initially believing he had the flu, Roberts became alarmed when blood tests showed low white blood cell and platelet counts. His rheumatologist advised him to go to the emergency room, where doctors confirmed he had malaria. Despite attempting to maintain a sense of humor, Roberts admitted to feeling scared, calling the illness the worst he has ever experienced.

Roberts suspects he contracted malaria during a vacation to Indonesia earlier in August. Although he doesn’t recall a mosquito bite, symptoms developed roughly 10 days after his return. Malaria is widespread in tropical regions and, if untreated, can cause severe complications, including organ failure or death.

While hospitalized, Roberts was treated with IV artesunate, the standard treatment for severe malaria in the U.S. He described a challenging recovery, with fluctuating temperatures, intense night sweats, and persistent fatigue. On August 27, he referred to it as a “down day,” reflecting the exhausting and unpredictable nature of recovery.

Roberts expressed gratitude to his colleague Trace Gallagher for covering his broadcasts and thanked Inova Health for their attentive care. He noted that even his doctors had little firsthand experience with malaria cases, emphasizing the rarity of the illness in the U.S.

By sharing his story, Roberts hopes to raise awareness about malaria and the risks associated with international travel. Dr. Jeffrey Horelick, who previously battled the deadliest malaria strain, Plasmodium falciparum, offered his support and wished Roberts a full and speedy recovery.