Outbreaks of cholera, measles and yellow fever can spread rapidly and be fatal. Malaria is endemic in more than 100 countries. Millions are living with HIV/AIDS and tuberculosis. Viral haemorrhagic diseases such as Ebola or Marburg are rarer, but are potentially fatal. The coronavirus COVID-19 pandemic has affected virtually every country on earth, infecting tens of millions of people and resulting in the death of over a million more.
The people at highest risk are mainly those living in poverty or in areas of great instability, such as in armed conflict or during mass displacement, where living conditions are precarious, access to healthcare is limited, and vaccination coverage is low.
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![Mundri Emergency Room, Primary Healthcare Centre Mundri Emergency Room, Primary Healthcare Centre](https://img.msf.org/AssetLink/3m6570r1mbxj7x83k816b5416wnkf311.jpg)
Voices from the field
Despite all the preventive measures taken... expectations are bleak.Ayla Emmink, doctor in South Sudan responding to COVID-19
![Zambia, cholera vaccination in Lusaka Zambia, cholera vaccination in Lusaka](https://img.msf.org/AssetLink/252n4x88mbe517w14sven7un463wgx2q.jpg)
Encouraging new results further demonstrate effectiveness of the single dose oral cholera vaccine
![](https://img.msf.org/AssetLink/8m7vjv526x84gm1puub23b5dt58ya47b.jpg)
Emergence of diphtheria worsens situation of Rohingya refugees
![Cholera outbreak in Yemen Cholera outbreak in Yemen](https://img.msf.org/AssetLink/7bps3ex8j836515t1i2cyb18qly28051.jpg)
From cholera to diphtheria – shattered health system battles a new threat
![End of intervention in response to a Marburg fever outbreak End of intervention in response to a Marburg fever outbreak](https://img.msf.org/AssetLink/b511lii8mf7241a8vfy32x151f17c7bs.jpg)
MSF ends its intervention in response to the Marburg fever outbreak
![Cholera epidemic, Am Timan Cholera epidemic, Am Timan](https://img.msf.org/AssetLink/4m6tbgawne07474s1fcmo47214m866te.jpg)
Misinformation and lack of resources hamper cholera response
![Marburg fever - Kabale District, Uganda Marburg fever - Kabale District, Uganda](https://img.msf.org/AssetLink/hl15k0gth2wm261e620efugsv157k1o6.jpg)
MSF responds to an outbreak of Marburg fever
![Madagascar Plague - MSF Response Madagascar Plague - MSF Response](https://img.msf.org/AssetLink/0sm4r73qw287pm0t7lw2vn12nm21uet8.jpg)
MSF provides support in tackling plague outbreak
![Cholera outbreak in Maiduguri Cholera outbreak in Maiduguri](https://img.msf.org/AssetLink/7w67e7ay62hooxf86d7s5mb6361276cl.jpg)
MSF scales up activities as cholera spreads in Borno state
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In eastern Chad, cholera continues to spread
Research & Analysis
MSF publishes study on the accuracy of HIV rapid diagnostic tests
Treating, Containing, Mobilizing: The Role of MSF in the West African Ebola Epidemic Response
![Ebola, Equateur province, DRC Ebola, Equateur province, DRC](https://img.msf.org/AssetLink/u16pej06p0elay840om2vu6aj612pe06.jpg)
MSF supported research on Ebola
![Kyrgyzstan - Decentralized care for TB patients Kyrgyzstan - Decentralized care for TB patients](https://img.msf.org/Docs/MSF/Media/CMS3/2/b/8/c/MSF149408.jpg)
New survey shows outdated policies and practices risk further spread of drug-resistant TB
![Meningitis Epidemic in Niger Meningitis Epidemic in Niger](https://img.msf.org/AssetLink/m3ll72b1v84414j21qdp73311m8uy5o1.jpg)
Epidemics: Neglected emergencies?
![Ebola in Paynesville, Liberia Ebola in Paynesville, Liberia](https://img.msf.org/Docs/MSF/Media/CMS3/9/8/a/4/MSB13568.jpg)
Ebola: Pushed to the limit and beyond
![MSF treats DR-TB cases MSF treats DR-TB cases](https://img.msf.org/AssetLink/5566774pfu3d53jvuq653348087bdtx6.jpg)