Top 10 Most Hazardous Diseases of the 21st Century

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Have you ever been scared by the idea of death? If the answer is negative then you may like to think again. Here is a list of top ten most hazardous diseases of the developing world which can affect any one if one doesn’t take enough precautions attached with them. These diseases have been ranked by their annual death toll which is updated annually. The list is as follows:


1. Respiratory Infections
Respiratory Infections

Mostly these lower respiratory infections include pneumonia and  diseases of the lungs, tracheal tube etc. These diseases often spread by coughing, sneezing, laughing or exhaling. These diseases have an annual death toll of more than four million people.



“Human immunodeficiency virus” also known as HIV, destroys the immune system of human body. It can spread by unprotected sex, unsafe blood transfusions or contaminated needles and from even mother to child during child birth. The death toll of this deadly disease stands at more than 3 million deaths annually.


3. Malaria

Malaria is spread by mosquito bites and usually turns fatal if proper treatment is not meted out to the patient. The death toll for this disease stands between one million and five million annually and the number of people affected by it in the world stands around 300 million. The best prevention to this disease is the use insecticide-treated mosquito nets and spraying of indoor insecticide.


4. Diarrhoea

Diarrhoea is caused by cholera or dysentery and is a result of infection from bacteria and microscopic worms. Dehydration is the most common cause of death in deaths related with diarrhoea. The death toll for this disease stands at around two million deaths annually. Contaminated food or water usually leads to being infected by diarrhoea.


5. Tuberculosis

Tuberculosis or “TB” as it is commonly known is spread by coughing or sneezing and its common symptoms are weight loss, weakness and common chills. The annual death toll stands at two million. It’s most common treatment is DOTS (Directly Observed Therapy Short Course).


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