COVID-19: may prove more lethal than the previous Pandemics

The history of humankind is full of natural disasters. It may appear in the form of Earthquake, Floods, Volcanos, Fire, or Epidemics. But all of them cause loss of human lives and economies. Human beings are the end victim in either case.
In 1720–1722 Plague, 1816–1826 Cholera, 1918–1920 Spanish Flu, 2020 COVID-19. It seems that once in 100 years, the world is devastated by a pandemic. The last recent epidemics we can mention are the following: In the year 1720 plague, in the year 1820 cholera outbreak and the most recent Pandemic was the Spanish flu of 1920. It was noticed that all of these pandemics have precisely the same pattern as the COVID-19. However, the precision with which these pandemics occur at exactly 100 years of age makes us think deeper. Are these pandemics somehow artificially created by malicious intentions? In 1720 there was a deadly pandemic of bubonic plague. It started in Marseille (France) and was later called "The Great Plague of Marseille."
The estimated number of deaths were around 100,000 approximately. In 1820 the first cholera pandemic occurred, somewhere in Asia. Among the affected countries, we can list Indonesia, Thailand and the Philippines. And this Pandemic has killed about the same number of people. About 100,000 officially registered deaths. The main reason for the infection was the consumption of water from lakes infected with this killer bacterium. In 1920 one of the most unrelenting pandemics occurred. This was the Spanish flu that has infected about half a billion people and killed 100 million. The Spanish flu holds the official record for the deadliest Pandemic officially recorded in history. It is now 2020. At the 100th anniversary of the Spanish Influenza, humanity is facing a new potential pandemic called COVID-19. 
In the past, such Pandemics stayed for a couple of years long, how long may stay COVID-19? It all depends on our struggle, will power, and enforcement of adequate measures. The available proved-successful measures are from Chinese experience – Social Distance. Lockdown is the possible measures to control over its further spread. Unfortunately, social values and developments achieved by the humankind, are significant hurdles in the implementation of complete and comprehensive lockdown. Due to modern-day innovations, the mobility has enhanced, travel has become a very convenient matter, but it may cause the spread of the contagious virus. Innovations and modern lifestyles have made humankind much lazy (physically) and less immune. Personal freedom and human rights have disabled us from following strict disciplines. However, complete lockdown and keeping social distances is a pre-requisite to control the further spread of the virus. Although the health care facilities have been enhanced, but may not be able to serve all infected patients. A prolonged strict lockdown may cause economic collapse, especially for fragile economies. We are afraid, poverty and hunger may cause more deaths than the Pandemic itself.
The world has become a global village, and we are inter-dependent. No single country can stay safe if its surrounding neighbors are not safe. As the COVID-19 is highly contagious, the extra care is needed to eliminate it from the whole world. When we think about our own safety, we must consider safety for others too. To ensure sustainable safety for ourselves, we need to ensure safety for others also. 
The whole world has to fight against COVID-19 collectively. The nations having more resources may contribute more, and the nations having more experience may offer more. The countries more vulnerable deserve more care. Those countries who cannot face such a big disaster alone, deserve more attention. Although the International community is aware of their responsibilities and has already taken few measures to assist needy nations, we have to rescue everyone in any part of the world, irrespective of political, religious, cultural, ethnic, or race differences. Hope COVID-19 will make us forget all differences and united.