Blurred image of SARS-CoV-2

The infectious disease that broke out from Wuhan, China at the end of 2019 has spread to all parts of the world. Hundreds of thousands of people were killed within half a year.

I have summarized and analyzed some experiences and lessons, hoping to provide readers with basic coping knowledge. Although my knowledge is limited, mistakes are unavoidable, and details and evidence are relatively lacking, but the plague now makes me have to do my best.

May 27, 2020

Contents:
Foreword
Chapter 1 A consensus
Chapter 2 Q/A
1. Will I get sick to lick a stone covered with SARS2 virus?
2. Are the Japanese cheating collectively?
3. Why measures such as maintaining social distance, washing hands frequently, and no need to wear masks, as advocated by WHO(World Health Organization) in the early days, could not prevent the SARS2 plague from developing from a regional epidemic to a world disaster?
4. Why did the European and American countries implement social isolation measures but could not solve the plague completely?
5. What is wrong with the concept of social distance?
6. Why is mask more important than social distance?
Chapter 3 The process of SARS2 virus infecting human body
3.1 Four stages
3.2 Leaving the human body stage
3.3 Medium transmission stage
3.4 Invasion stage
3.5 Infection stage
Chapter 4 Medical Measures
4.1 Cure or self-heal
4.2 Medical system positioning
4.3 Overload of medical system
4.4 Mortality rate
4.5 Specific medicines and vaccines
Chapter 5 Social Measures
5.1 Overview of social measures
5.2 Blockade and sealoff
5.3 Contact tracing systems(CTS)
5.4 Loopholes in social measures
5.5 Sealoff logic
5.6 Another helpless solution
Chapter 6 Some philosophical and logical discussions
6.1 Is the positive rate plus the negative rate equal to 100%?
6.2 Mask order
6.3 Infection rate
6.4 Rats and mosquitoes
6.5 Survival of the fittest
Postscript
Final Summary