Visus history and previous pandemic

The outbreak of COVID-19 is a message; we are not free from the law of nature and it shows how humans are not infallible. 

Today almost all nations operating medical investigation units working on Globally and as individual nations on the contagious diseases.

This unit’s to investigate, trace, and track the patterns of diseases and their causes to find a cure.

Pandemic and Society

It estimates that the cases reported on pandemic are very high from the 20th century and today we are more familiar with the terms such as pandemic and epidemic. 

An epidemic is a disease that spreads and transmit by many people or communities within a country. When an epidemic affects multiple countries, it refers as a pandemic.

Microbes and infectious diseases

Microorganisms are around 3.8 billion years old, The first form of life.

It has an active role in the metabolic activities of all living organisms. Still, there is a division of microbes called pathogens that cause life-threatening diseases.

The human body is the natural habitat of trillions of microbes, various of them are we gained through vaccination.

Vaccination: If a city of people is vaccinated properly; it means they are the guardians of the future. Vaccination has a significant part to prevent and make the body resist seasonal and communicable diseases.

Virus, Bacteria, Fungi, Protozoa are common disease-causing microbes.

Pathogens can silently enter your system and hijack your organs. Gradually its toxin damages your cells, then it’s a matter of time before your immune will collapse, and may your death will happen.

Adapt and adjust best to the changing environment in which it finds itself.Microbes can reproduce in a mere 30 minutes or fewer.

Bacteria: Single-celled organisms, most bacteria are not harmful. Some multiply inside the body and produce toxins that cause disease.

Virus: Tiny infectious particles are not usually classified as living things. They take over cells’ genetic material (DNA) and make copies of themselves that infect other cells.

Spreading: Disease transmission can occur from person to person by skin contact, breathing in droplets, sexual contact, contaminated food and water, insect bite, and via animals.

Disease contamination can occur in animals to the person which is called as zoonotic diseases.

In today’s scenario, more of the infectious diseases are to begin with international travelers. 

 Increased multinational travelers, climate change, ecological imbalance, and migration are offering a hospitable environment for the growth of new diseases.

Fear OF Contagions

Nosophobia or disease fear is a condition of an irrational fear of developing a disease.

Mainly there are 2 groups of people, one which they often under-react to familiar threats and reluctance to take preventive measures until they really encounter with the gravity of the dilemma.

And another group that frequently worried and feared about developing the new exotic contagions and struggles with anxiety and depression.

It is a fact that the credibility and trustworthiness of WHO is lost as it failed to take necessary action during the initiation of pandemic COVID-19.

The human being is at the peak of its evolution. As species, we must evolve, learn, and adapt. 

What can we do?

It’s necessary to deliver the message effectively, today people are more cynic they need clarification and data to believe in something.

So the information just via a phone call or notice will not work, we have to show them through effective visual media and a practical approach for better understanding. 

A conscious approach to social and personal hygiene is an important factor.

Make sure your child is getting the vaccination. When you consult a doctor, ask questions to clarify your doubts and concerns, and the need for prescribed medicine.

Be aware about the STD and its precautions.

Social distancing, isolation, personal hygiene, and quarantine are the most efficient actions to control the disease spreading. 

Lead a healthy lifestyle, Stop smoking, and start an exercise on a daily basis. A Balanced diet, Better sanitization, and immunization will provide you a better immune system.

When you are planning for a vacation make sure of the current situation of the place, you want to visit and understand its climate and the factors that affect your health then set your backpack.

Be more self-sufficient and be prepared as there is another attack.


Infectious diseases existed during the prehistoric period of man. 

During the stone age, the human organizes into stationary civilization areas as they started cultivation and animal husbandry the result was the zoonotic infectious become more common.

As our ancient ancestors lived in isolated tribes, so there was less opportunity to spread disease.

 Later, when the modern man clusters together into cities and beginning of international trades make pandemic more intense and volatile.


Coronavirus is a specific subset of the virus. They use RNA instead of DNA as their genetic material.

Corona virus covers them in spikes on the surface. They use those spikes to invade cells and the spikes are the corona of the coronavirus.

SARS and measles are coronaviruses both are respiratory syndromes and COVID-19 is a novel form of corona which these types of virus affect our respiratory system.

When we burn and plow amazon forests, exploiting our nature, haunt the Wild animals in China to its extinction and human beings came into contact with wildlife that they never came into before; there is no amusement of those people have new kinds of diseases.

Previous data.

1918: Spanish flue

Death rate: 50 million

pathogen: Influenza A virus


1957: Asian Flue 

Origin: china 

Pathogen: influenza a type 


Death rate: 1 to 2 million deaths were recorded

1968: Hong Kong flu

Origin: china 

Pathogen: Influenza a subtype


death rate: 1 to 4 million 

1981: HIV  

Origin: Unknown

source: A type of chimpanzee has been identified with this new virus

2002: Sars

origin: china 

pathogen: SARS coronavirus

death report by WHO: 

2009: Swine flu

pathogen: H1N1 virus

2012: Mers 

Origin: Saudi Arabia 

Pathogen: Mers COVID

2020: COVID-19

origin: China, Wuhan 

pathogen: SARS-CoV-2 

19 thoughts on “Visus history and previous pandemic

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