1. Cholera
If untreated, cholera is a severe form of diarrhea that can be lethal in a matter of hours. It is brought on by consuming contaminated food or drink.

Cholera kills between 21,000 and 143,000 people worldwide every year, according to estimates.

2. pneumonic challenge
Most plague outbreaks are caused by the bacterium Yersinia pestis, which is found in rodents but is spread to people via insects. If left untreated, pneumonic plague can be lethal in 18 to 24 hours, but it is rapidly curable with over-the-counter anti-infection drugs.

When it comes to discomfort, think about respiratory symptoms like wheezing and coughing, which frequently result in bloody sputum.

3. Ebola
The sickness produces internal bleeding from harmed organs and other punctures in the body in the majority of Ebola hemorrhagic fever patients. Several African nations have seen the effects of the Ebola outbreak.

The number of Ebola-related fatalities that have not yet been reported could reach 90%. Patients who experience negative side effects from their medication may occasionally pass away within a few hours.

4. Dengue fever with severe bleeding
Like the flu, dengue fever has mild symptoms and is spread by mosquitoes. It can consequently change into a potentially dangerous form.

A clot could form in the veins as a result of this type of bleeding, which would reduce the blood’s platelets. If there are not enough platelets to clot the blood, the body goes into shock and the person soon passes away from internal bleeding.

5. Meningitis
Meningitis is frequently brought on by bacteria or infectious diseases since it is an infection of the protective layers of the body. Along with the brain and spinal cord, the remainder of the body is also shielded by these layers.

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Young children, adolescents, infants, and adults are particularly at risk. First Aid for Life issues a warning that it may result in major vein damage (septicemia) and, surprisingly, could quickly result in death.

6. Drag-eating bug
A bacterial infection that quickly spreads from the body’s weaker muscles to the rest of the body is what causes necrotizing fasciitis, a skin condition. It has a 30%–40% probability of becoming lethal, to put it another way.
Many people believe that amputation of the affected area will prevent the infection from spreading to other parts of the body.

7. Stroke
When the blood supply to a region of the brain is interrupted, a stroke occurs, which results in the destruction of brain tissue by air from the outside. The creation of a clot inside a blood vessel or the rupture of another vessel is the most frequent cause.

Depending on the severity of the stroke, recovery is possible, but the chance of dying from another severe stroke within two hours is significantly increased.