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Top 7 Deadliest Diseases You Should Beware Of


Many diseases have harassed human beings through the history, sometimes turning into terrifying epidemics, such as plague. The latest medical research has helped to find vaccines and efficient drugs to prevent or cure most popular infections.

However, the lack of health care provision and poor sanitation conditions in many regions of the world, stressful life in densely populated and polluted urban areas, promiscuous sexual behavior and many other reasons keep cultivating numerous diseases and infections that kill millions of people every year. So what are the deadliest diseases responsible for the biggest number of fatalities today?

  1. Influenza

Influenza, commonly known as flu, is a highly contagious illness, affecting both lower and upper respiratory tracts. It is caused by viruses, normally appears during winter months and has a wide range of symptoms including fever, nasal congestion, cough, running nose, muscle pain, fatigue, headache and more. It can be similar to common cold on early stages, but requires a more complex treatment. Flu can have serious complications which results in about 300,000 to 500,000 fatalities annually. However, there are numerous vaccines reducing the chances of contracting the virus and doctors recommend taking them before the beginning of winter season.

  1. Malaria

Malaria is one of the most common deadly diseases, mainly endemic in Sub-Saharan Africa. Caused by a parasite and transmitted by infected mosquitoes, malaria kills 600,000 to 900,000 people every year. Symptoms show up 8 to 25 days after contracting and are similar to flu signs, including fever, shivering, headache, vomiting or even coma. If not given proper medications, the patient may experience serious complications followed by death.

Many people in Africa do not have access to healthcare centers, which makes malaria one of the deadliest diseases. Although there is no universal vaccine against malaria, there are drugs reducing the chances of contracting it. When traveling to endemic regions, make sure to use anti-mosquito nets while going to bed and repellents during day time.


HIV is one of the deadliest viruses and the leader in death toll among sexually transmitted diseases. Approximately 1.5 million people die annually from AIDS, the disease caused by human immunodeficiency virus, with over 70% of fatalities happening in Africa. The virus damages the immune system to the point that the body cannot resist even relatively harmless infections and death follows. The virus is transmitted through blood and other body fluids, such as vaginal and rectal fluids, pre-semen and semen fluid as well as breast milk. Sexual contacts and sharing needles while taking drugs are the main ways of contracting the virus.

Gay couples and anybody who practices unprotected anal sex are particularly exposed to the virus. No HIV cure has been found yet, however, it is not difficult to reduce the chances of contracting the virus to the minimum following several simple guidelines. Use condoms while having sex with someone you are not sure about, limit the number of sexual contacts and if you take drugs, make sure to dispose of needles after single use. This will help you avoid HIV/AIDS and save your life.

  1. Chronic Obstructive Pulmonary Disease

Chronic Obstructive Pulmonary Disease or COPD causes about 3 million deaths worldwide annually which makes it . To put it simple, lungs do not get enough air, which results in cough, breath shortness and mucus discharge. It is also common among people having chronic bronchitis.

The main cause of COPD is inhaling polluted air, tobacco being the main reason. About 80% of the patients with COPD are current or past smokers. Secondhand smoking also


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