June 27, 2025, marked National HIV Testing Day in the United States, with health authorities and public officials across cities including Miami, Philadelphia, New York City, Washington D.C., and Detroit promoting free, fast, and confidential HIV testing services. Campaigns emphasized the importance of knowing one's HIV status to prevent transmission and connect individuals to care. Notably, less than half of U.S. adults have ever been tested for HIV, and approximately 13% of people living with HIV are unaware of their status. Testing is available regardless of insurance or immigration status, with options including mail-order tests and in-person services at local health centers and pharmacies. Concurrently, on July 28, 2025, World Hepatitis Day highlighted the global burden of hepatitis B and C, with over 300 million people affected worldwide and 1.3 million annual deaths. The World Health Organization (WHO) urged accelerated efforts to eliminate hepatitis, noting that only 13% of people with hepatitis B and 36% with hepatitis C had been diagnosed by the end of 2022, and treatment rates remain low. WHO also announced that hepatitis D has been classified as carcinogenic. Preventive measures, including effective vaccines and curative treatments, are available, and public health campaigns encourage testing and treatment to reduce liver cancer risk and prevent transmission. In New York City, more than 314,300 people are estimated to live with hepatitis B or C, with low- or no-cost testing and treatment accessible. The WHO emphasized the potential to prevent 2.8 million deaths over the next five years with timely action.