Viral Diseases

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A world map showing vaccine-preventable disease hot spots, with colored circles indicating outbreak size and location. Measles outbreaks (red) appear across the Americas, Europe, Africa, Asia, and Oceania. Large chicken pox (green) and RSV (purple) outbreaks are visible in Asia. Yellow circles mark whooping cough in the Americas and Oceania, while smaller circles show diphtheria, hepatitis A and B, mumps, and polio outbreaks in Africa, Europe, and Asia. Circle size corresponds to outbreak magnitude, with a sample scale showing 10,000 cases. The map is labeled “Think Global Health.”

Tracking Measles and the World's Vaccine-Preventable Diseases

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This weekly map visualizes outbreaks of nine childhood diseases in collaboration with the International Society for Infectious Diseases

Delegates attend the 79th World Health Assembly of the World Health Organization, in Geneva, Switzerland, on May 18, 2026.

WHO Elections: Reform Without Reckoning

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The organization cannot be reshaped without confronting its internal structure, partnership rules, and expanding operational role

The Race to Develop an Ebola Bundibugyo Vaccine

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Nicole Lurie, U.S. director for the Coalition for Epidemic Preparedness Innovations, explores the science behind the five Ebola Bundibugyo vaccine candidates in the pipeline and the hurdles they face

The Race to Develop an Ebola Bundibugyo Vaccine

Five Ways to Deliver on the Pandemic Agreement's Promises

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Building the right legal, operational, and financial systems to prevent the next pandemic will require going beyond negotiations in New York or Geneva

A worker in personal protective equipment disinfects a cinema in preparation for the reopening of movie theaters, as the country's capital region loosens coronavirus disease restrictions, at Eastwood Mall, in Quezon City, Philippines, on October 16, 2021.

How Religious Leaders Can Bolster the Ebola Response

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Religious actors can help reduce the fear and mistrust surrounding the Ebola outbreak, and deliver health-care services directly

Muslim faithful leave after attending prayers marking the Muslim holiday of Eid al-Adha, as authorities intensify efforts to contain a new Ebola outbreak caused by the Bundibugyo virus strain, at the Central Mosque in Bunia town, Ituri province, Democratic Republic of Congo, May 27, 2026.

COVID-19 Vaccine Hesitancy in Africa: Tackling Safety Concerns for Optimal Uptake

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To accelerate vaccine uptake, African countries have to battle the growing reservations toward the vaccine

COVID-19 Vaccine Hesitancy in Africa: Tackling Safety Concerns for Optimal Uptake

UPDATED: Timeline of the Coronavirus

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A frequently updated tracker of emerging developments from the beginning of the COVID-19 pandemic

Photo shows a gloved hand holding a test tube labeled, “2019 nCoV” with two boxes ,marked “Positive” and “Negative.” The positive box is checked.

Pandemic Fund to Africa: Step to the Back of the Line

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Missed opportunities for impact in Africa in the Pandemic Fund's first round of grants

Pandemic Fund to Africa: Step to the Back of the Line

Poultry Vaccine Hesitancy

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When trade restrictions prevent effective public health interventions

Poultry Vaccine Hesitancy

The Rise of Infectious Diseases Due to Climate Change

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Building resilience to climate-linked diseases in India and other countries and communities most at risk

The Rise of Infectious Diseases Due to Climate Change

The Virus Doesn't Discriminate, But Hate Crimes Tell a Different Story

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Addressing the rise of hate crimes against Asian Americans

More than 200 people gathered on Washington Square Park to rally in support Asian community, against hate crime and white nationalism.

The Thousand and One Natural Shocks of COVID-19

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Assessing psychological impacts of coronavirus—the second in a two-part series on the mental health burden of COVID-19

The story title comes from Shakespeare: " The heart-ache and the thousand natural shocks / That flesh is heir to"—photo is of British actor Kenneth Branaugh holding a skull in the film Hamlet (1996). The photo shows the actor bathed in orange light and dressed in period garb holding a skull in a contemplative pose. GETTY IMAGES/Mondadori