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According to the World Health Organization (WHO) and numerous health agencies, Dengue is a viral infection and a leading cause of febrile illness among international travelers.
The WHO recently classified Dengue as a grade 3 emergency, with an estimated 4 billion people at risk globally. 
As of June 2025, the WHO Dengue Situation Update 723 indicates that over 6 million Dengue cases and 7,552 related fatalities have occurred in 2025, including cases in Florida.

An unusual surge in the number of toxigenic diphtheria infections was noted in several European countries in the summer of 2022. 
According to research published by the New England Journal of Medicine on June 4, 2025, a total of 20 cases of diphtheria were reported across six European countries from January to July 31, 2022.
After July, there was a steep increase in case numbers, with 38 cases reported in August, 74 in September, and 115 in October, before the number plateaued at 116 cases across 10 countries in November 2022.

An unusual surge in the number of toxigenic diphtheria infections was noted in several European countries in the summer of 2022. 
According to research published by the New England Journal of Medicine on June 4, 2025, a total of 20 cases of diphtheria were reported across six European countries from January to July 31, 2022.
After July, there was a steep increase in case numbers, with 38 cases reported in August, 74 in September, and 115 in October, before the number plateaued at 116 cases across 10 countries in November 2022.

A recent study emphasized the risks posed by ticks and tick-borne diseases (TBDs) across Europe during the summer months.
Among these serious illnesses is Lyme Disease, a severe bacterial disease.
Published in the Journal of Environmental Management in February 2025, this study examines the impact of climate change on the distribution of disease-carrying ticks. It finds that tick suitability decreases in low-climate scenarios but increases in high-climate scenarios.

A recent study emphasized the risks posed by ticks and tick-borne diseases (TBDs) across Europe during the summer months.
Among these serious illnesses is Lyme Disease, a severe bacterial disease.
Published in the Journal of Environmental Management in February 2025, this study examines the impact of climate change on the distribution of disease-carrying ticks. It finds that tick suitability decreases in low-climate scenarios but increases in high-climate scenarios.

The United States has been included in the World Health Organization's latest notice regarding a Public Health Emergency of International Concern due to polio detections.
As a result, the country is subject to Temporary Recommendations issued by the International Health Regulations Emergency Committee on Polio Eradication.
Moreover, the U.S. Centers for Disease Control and Prevention (CDC) has recently confirmed that circulating poliovirus remains a risk in 41 countries. In response, several U.S. states have ramped up their detection efforts.

The World Health Organization has recently reconfirmed that the mosquito-transmitted yellow fever virus has become endemic in various countries in the Americas, including the Republic of Colombia.
Yellow fever was once mainly sylvatic in remote Colombian regions throughout the 20th century.

Following a significant increase in measles cases during the first five months of 2025, the U.S. Centers for Disease Control and Prevention (CDC) is now focusing on preventing outbreaks at summer camps.
On June 11, 2025, the CDC announced that public health professionals can utilize the "Be Ready for Measles" toolkit to effectively communicate with various audiences while preparing for and responding to measles cases and outbreaks.
The CDC highly recommends, 'When a camper, staff member, or volunteer has measles symptoms, take these actions immediately.'