NOT MEDICAL ADVICE.  For information only. In an emergency, call your local emergency number immediately.

Twenty diseases profiled and documented.

In-depth profiles for 20 infectious diseases. Every page summarizes symptoms, transmission, prevention and history from WHO and CDC factsheets. Six diseases receive live data updates hourly; the remaining 14 display WHO-published baseline figures.

outbreak watch

8 diseases on outbreak watch.

High-priority diseases with ongoing global transmission or pandemic potential flagged by the WHO. COVID-19 case counts are live; others display WHO-published baseline figures from the latest published reports.

COVID-19

SARS-CoV-2
Cases
703M
Deaths
7.01M
CFR
0.9%
Vaccine
Available

Dengue

Dengue virus (DENV 1–4)
Cases
6.50M
Deaths
5.2K
CFR
0.08%
Vaccine
Limited

Ebola

Ebolavirus (Zaire, Sudan)
Cases
37K
Deaths
16K
CFR
25–90%
Vaccine
Available

H5N1 Bird Flu

Influenza A H5N1
Cases
970
Deaths
470
CFR
~50%
Vaccine
Stockpiled

Mpox

Monkeypox virus (MPXV)
Cases
95K
Deaths
200
CFR
1–10% (Clade I higher)
Vaccine
Available

Chikungunya

Chikungunya virus (CHIKV)
Cases
3.80M
Deaths
500
CFR
<0.1%
Vaccine
Available

Nipah

Nipah virus (NiV)
Cases
700
Deaths
410
CFR
40–75%
Vaccine
In development

Zika

Zika virus (ZIKV)
Cases
1.50M
Deaths
18
CFR
<0.01%
Vaccine
None approved
disease reference

Twelve diseases in our reference library.

Detailed profiles for key endemic diseases and historical threats. Educational reference — not actively monitored for outbreaks.

Malaria

Plasmodium falciparum / vivax
Cases/Year
249M
Deaths/Year
608K
CFR
<1%
Vaccine
R21 / RTS,S

Tuberculosis

Mycobacterium tuberculosis
Cases/Year
10.6M
Deaths/Year
1.30M
CFR
~13%
Vaccine
BCG

HIV / AIDS

Human Immunodeficiency Virus
Living with HIV
39M
Deaths/Year
630K
CFR (untreated)
High
Treatment
ART

Cholera

Vibrio cholerae O1 / O139
Cases/Year
1.3–4M
Deaths/Year
21–143K
CFR
<1% treated
Vaccine
OCV available

Measles

Measles morbillivirus
Cases/Year
9M+
Deaths/Year
136K
R₀
12–18
Vaccine
MMR

Rabies

Rabies lyssavirus (RABV)
Deaths/Year
59K
CFR (symptomatic)
~100%
Reservoir
Dogs, bats
PEP
Effective

Yellow Fever

Yellow fever virus (Flaviviridae)
Cases/Year
~200K
Deaths/Year
~30K
CFR (severe)
50%
Vaccine
17D (lifelong)

Typhoid Fever

Salmonella enterica Typhi
Cases/Year
11M
Deaths/Year
110K
CFR
<1% treated
Vaccine
TCV / Vi-PS

Hepatitis B

Hepatitis B virus (HBV)
Chronic infections
296M
Deaths/Year
820K
Cirrhosis/Cancer
Major risk
Vaccine
Available

Hantavirus

Hantaviridae (multiple species)
Global Cases/Year
~150K
HPS CFR
38%
Reservoir
Rodents
Vaccine
None (US)

Plague

Yersinia pestis
Cases/Year
1–2K
CFR (pneumonic)
~100%
Reservoir
Rodents / fleas
Vaccine
None (US)

Marburg Virus

Marburg marburgvirus (MARV)
Outbreaks since 1967
14+
CFR
24–88%
Reservoir
Fruit bats
Vaccine
In trials

About the disease pages

Each disease page on VirusWatch is structured around five core areas: clinical overview (symptoms, incubation period, case fatality rate), transmission routes, prevention and vaccination guidance, current global surveillance data, and outbreak history. Clinical summaries are sourced from WHO situation reports, CDC health notices, and ECDC rapid risk assessments.

Live Data vs. WHO-Published Baselines

6 diseases have live statistics pulled from public APIs, refreshed hourly: COVID-19 (disease.sh), Malaria, Tuberculosis, HIV/AIDS, Measles, and Hepatitis B (WHO Global Health Observatory). These figures update automatically when new data is published by WHO or disease.sh upstream. The remaining 14 diseases — including Dengue, Ebola, H5N1, Mpox, Chikungunya, Nipah, Zika, Cholera, Rabies, Yellow Fever, Typhoid, Hantavirus, Plague, and Marburg — display WHO-published baseline figures from the most recently published WHO reports. No public global API exists for real-time case counts for these diseases; their baselines are updated manually when WHO or CDC publishes new official data. We do not fabricate or estimate figures. All 20 diseases are covered with full clinical profiles, modal briefings, and structured data.

Data accuracy and limitations

All figures represent reported cases — actual incidence is typically higher due to underreporting, particularly in countries with limited diagnostic infrastructure. Case fatality rates (CFR) represent confirmed deaths among confirmed cases and should not be interpreted as infection fatality rates (IFR). When WHO and disease.sh figures differ, we display the WHO figure with a data-source indicator. All information is for educational purposes only and does not constitute medical advice.

To report a data discrepancy or suggest a new disease page, contact [email protected]. All submissions are reviewed by our editorial team within 48 hours. We aim to be the most accurate, transparent free resource for infectious disease epidemiology on the web.

Informational only — not medical advice. Information here is summarized from WHO, CDC, ECDC and disease.sh public feeds and is for general education. Always consult a licensed physician. In an emergency, call your local emergency number.