Around the World Newsletter

About the newsletter

• Our monthly issues highlight CDC's global work and impact.
• Receive up-to-date information on global public health issues, emerging diseases and outbreaks, and policy developments.
• Explore our success stories, health campaigns, news, videos, publications, and more.

Our latest issue

The World's Deadliest Animal

Mosquitoes are world’s deadliest animal, spreading diseases like malaria, dengue, West Nile, Zika, chikungunya, and lymphatic filariasis that threaten millions of people worldwide. CDC has a long history of collaboration with Ministries of Health and other partners to fight mosquito-borne diseases, providing scientific leadership, at home and around the world. From Wolbachia-infected mosquitoes that fight dengue in Latin America to disease detectives stopping Zika in Bangladesh, CDC's expertise and innovative approaches are reshaping how the world responds to these threats.

CDC Supports Innovation Abroad to Protect Health at Home

Mosquitoes can be more than a nuisance, they can also make you sick. Mosquito-borne diseases continue to be a serious public health threat, made more difficult by challenges like increasing insecticide resistance. Read how CDC teams are exploring innovative approaches to controlling mosquitoes and the diseases they spread, such as evaluating the use of mosquitoes with Wolbachia to curb dengue in Latin America, drone larviciding technology to fight malaria in southern Africa, and genetically modified mosquitoes in the Pacific.

New CDC Travel Health Notice for Zika in Bali

CDC recently issued a Travel Health Notice for Zika in Bali, Indonesia. Zika is caused by a virus spread by mosquitoes. Infected people can spread the virus through sex and from mother to baby during pregnancy. Many people with Zika have no or only mild symptoms, but infection during pregnancy can cause serious birth defects. With no vaccines or medicines available to prevent or treat Zika, it is especially important to prevent mosquito bites and sexual transmission.

Stopping Zika in Bangladesh

When Zika virus emerged in Bangladesh in 2024, disease detectives from the CDC-supported Field Epidemiology Training Program (FETP) detected it early, allowing health officials to act swiftly. Since 2013, Bangladesh's FETP has built a skilled public health workforce that serves as the country's frontline defense against outbreaks, from a 2024 Zika investigation to multiple Nipah virus responses. Read how CDC Bangladesh helps stop health threats at their source before they reach communities worldwide including the United States.

Detecting a Dengue Outbreak in Nigeria

When dengue fever emerged in Nigeria in 2025, a CDC-supported surveillance system detected it early—and health officials acted fast. Since 2022, CDC has partnered with Nigeria to track sudden-onset fevers across the country. During the Dengue outbreak, CDC’s global health security experts expanded laboratory testing capacity, strengthened surveillance, trained staff, and deployed teams for active case finding. Read how CDC in Nigeria helped contain the outbreak.

Identifying an Invasive Malaria Mosquito in the Wild

The Anopheles stephensi mosquito is invading new regions and increasing malaria risk, but the mosquito can be difficult to distinguish from other species without lab testing. In 2023, a CDC team created an innovative portable assay to identify this mosquito in the field. The CLASS assay can be used anywhere, without a laboratory or trained biologists. Confirming the presence of the species is essential to effectively control and eliminate malaria.

Where we work

Learn more about how CDC works to protect public health around the world:

Additional Resources

• Preventing Mosquito Bites While Traveling
• Mosquitoes: Communication Resources