Naegleria (nay-GLEER-e-uh) infection is a rare and usually fatal brain infection caused by an amoeba commonly found in freshwater lakes, rivers and hot springs. Exposure occurs during swimming or other water sports.  A change in the sense of smell or taste



Sudden, severe headache

Stiff neck

Sensitivity to light

Nausea and vomiting


Loss of balance







Anthrax is a rare, but potentially fatal condition caused by infection with a particular type of bacterium called Bacillus anthracis.  Normally, the spores of this bacterium reside in the soil and infect only grazing animals.  These could thrive in wild animals or cattle and livestock; the latter are the usual sources of infection in human beings. 

What are the signs and symptoms of anthrax

There may be three manifestations of anthrax in humans:

Cutaneous: skin infection can cause blisters that may ulcerate, and are usually found on face, neck, hands and legs

Respiratory: lung infection through inhalation of spores can lead to fever, shortness of breath, cough and extreme tiredness

Gastrointestinal: stomach and gut infection can lead to fever, cramps, bloody vomiting, bloody diarrhea, swelling of abdomen, enlarged lymph glands and sore throat






Just like the most dreaded dengue, chikungunya is also a mosquito-borne viral disease. Chikungunya is mostly not fatal but its pain can be highly traumatizing. It causes fever and very severe joint pains that can last for up to many years. The pain is debilitating and can make it difficult even to walk properly for many patients.


  • fever (sometimes as high as 104 °F)
  • joint pain
  • headache
  • muscle pain
  • rash
  • swelling around the joints
  • nausea, and vomiting.





Cholera is a serious bacterial disease that usually causes severe diarrhea and dehydration. The disease is typically spread through contaminated water. In severe cases, immediate treatment is necessary because death can occur within hours. This can happen even if you were healthy before you caught it.

Common symptoms of cholera include:

sudden onset of diarrhea



mild to severe dehydration






Colitis refers to inflammation of the inner lining of the colon. There are numerous causes of colitis including infection, inflammatory bowel disease(Crohn's disease, ulcerative colitis), ischemic colitis, allergic reactions, and microscopic colitis.





Dengue Fever

Dengue (DEN-gee) fever is a tropical disease caused by a virus carried by mosquitoes. The virus can cause fever, headaches, rashes, and pain throughout the body. Most cases of dengue fever are mild Dengue fever is a viral infection that can cause life-threatening illness, milder flu-like illness, or no symptoms at all.

Common signs and symptoms of dengue fever include:

high fever, possibly as high as 105°F (40°C)

pain behind the eyes and in the joints, muscles and/or bones

severe headache

rash over most of the body

mild bleeding from the nose or gums

bruising easily





Diphtheria is a serious bacterial infection usually affecting the mucous membranes of your nose and throat. Diphtheria typically causes a sore throat, fever, swollen glands and weakness. But the hallmark sign is a sheet of thick, gray material covering the back of your throat, which can block your airway, causing you to struggle for breath.


low fever, malaise, and weakness.

swollen glands on the neck.

Swelling of soft tissue in the neck, giving a 'bull neck' appearance.

nasal discharge,

fast heart rate.

A thick, gray membrane covering your throat and tonsils.

A sore throat and hoarseness.

Difficulty breathing or rapid breathing.




The Ebola virus disease (EVD), previously referred to as Ebola hemorrhagic fever, is a severe and often fatal infection. Ebola virus disease is a serious, often fatal condition in humans and nonhuman primates. Ebola is one of several viral hemorrhagic fevers, caused by infection with a virus of the Filoviridae family, genus Ebolavirus.

It is spread through contact with infected blood or bodily fluids.


Symptoms of Ebola

The time interval from infection with Ebola to the onset of symptoms is 2-21 days, although 8-10 days is most common. Signs and symptoms include:



joint and muscle aches




stomach pain

lack of appetite