Throughout history, humans have battled against deadly diseases that have claimed millions of innocent lives. While some have been eradicated through vaccination and medical intervention, others continue to maintain an alarming presence. So, let us read on to understand which is the dangerous disease in the world.
Here are some of the world most dangerous disease.
10 most deadliest diseases
For centuries, mankind has experienced deadly diseases that have not only altered the course of history but also led to the development of new medicines.
Below are 10 of the deadliest diseases in the world.
1. Bubonic plague
One of the most dangerous disease in the world was the Bubonic plague or the Black Death that swept through Europe, Asia, and Africa in the 14th century. It resulted in millions of deaths, and was Yersinia pestis, a bacterium that is spread by fleas living on rodents.
2. Spanish flu or influenza
The 1918 Spanish flu was considered one of the deadliest disease in the world. It spread to one-third of the world's population, killing over 50 million people. The H1N1 virus spread rapidly, partly due to the lack of vaccines and antibiotics at the time.
3. Smallpox
Smallpox is an infectious and deadly disease caused by the Variola virus. It is said to have caused about 300 million deaths in the 20th century. Characterised by high fever and rashes, it has a 30% mortality rate.
4. Cholera
Cholera is a severe diarrhoeal disease caused by the Vibrio cholerae bacterium and is spread mainly through contaminated water. Since the 19th century, it has been responsible for multiple pandemics, claiming millions of lives. Symptoms include severe dehydration, diarrhoea, and vomiting.
5. HIV/AIDS
HIV (Human immunodeficiency virus), causes acquired immunodeficiency syndrome or AIDS, has taken over 40 million lives since 1980. The virus attacks and kills a certain type of white blood cell in the body, which weakens the immune system. Millions of people are currently living with HIV/AIDS worldwide.
6. Ebola
Ebola virus disease (EVD) is transmitted through direct contact with infected bodily fluids. Symptoms include high fever, internal haemorrhage, and organ failure. With a mortality rate as high as 80 to 90%, it is considered one of the most dangerous disease in world.
7. Coronavirus
SARS-CoV-2 is a novel coronavirus that emerged in late 2019 in China, causing the COVID-19 pandemic. The disease spread quickly and resulted in millions of deaths. Though the symptoms are often mild with flu-like symptoms in the acute stage, it can evolve into severe pneumonia or respiratory failure with complications in different organs.
8. Malaria
Malaria is a potentially life-threatening disease spread through the bites of female Anopheles mosquitoes. Symptoms include fever, chills, and eventual organ damage.
9. Tuberculosis (TB)
Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis. Although it primarily targets the lungs, it can also affect other parts of the body. TB ranks among the primary causes of mortality globally, especially in underdeveloped regions.
10. Dengue fever
Dengue fever, a viral infection transmitted by female Aedes mosquitoes, has symptoms like fever, intense body aches, and, in severe cases, internal bleeding. In 2024, over 14 million cases and 10,000 deaths were reported from dengue globally.
FAQs
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What is the deadliest disease in history?
The 1918 Spanish influenza is history's deadliest disease. The epidemic claimed approximately 50 million lives globally.
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Is Ebola more deadly than COVID-19?
Although Ebola exhibits a considerably higher fatality rate (up to 90%), COVID-19's extensive global transmission resulted in a higher number of deaths.
Smallpox was declared eradicated in 1980, with existing samples only housed within secure laboratories.
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How to differentiate between malaria and dengue?
Female Anopheles mosquitoes transmit malaria, while virus-infected female Aedes mosquitoes transmit dengue.
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How to effectively prevent deadly diseases?
Fundamental measures such as vaccination, strict hygiene practices, improved sanitation infrastructure, and timely medical interventions can prevent deadly diseases from spreading.
Conclusion
Although advancement in medical science has managed to eliminate several lethal diseases, others still present a significant challenge to the global health system. Prevention strategies, including vaccination and ongoing medical research, are vital for combating these serious health threats.
However, the unpredictable nature of health risks emphasises the need for proactive financial planning. Health insurance provides a safety net, helping cover the costs of medical treatments, hospitalisations, and surgeries, alleviating the financial burden of unexpected illnesses. Additionally, critical illness insurance offers coverage specifically for life-threatening diseases, ensuring that you're financially protected when facing the most serious health challenges.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis, or treatment. Please consult your general physician or another certified medical professional for any questions regarding a medical condition. Relying on any information provided in this blog is solely at your own risk, and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.