Coronavirus & COVID-19 Overview: Symptoms, Risks and full History

 The coronavirus this time and the pandemic of influenza 100 years ago are very similar 

 Not to mention the direct health damage caused by the virus, I am worried that the economy has been hit hard. The International Monetary Fund (IMF) has announced a harsh economic outlook, but China, which had few subprime mortgages at the time of the Lehman shock and quickly responded by cutting interest rates and quickly survived the crisis, drove the world economy. On the other hand, this time it has been damaged all over the world, and there is no prospect at all.

By the way, human beings have experienced many infectious disease pandemics. A long time ago, a mysterious epidemic (smallpox theory seems to be influential) broke out in Athens during the Peloponnese War 2400 years ago, causing many casualties. After that, after epidemics such as typhus and plague, I experienced an influenza pandemic 100 years ago. This pandemic was the largest influenza ever, but I thought it was just like the current coronavirus, so this time it's a story.

What kind of fashion was it,,,,

From around March 1918 to 1920, a pandemic broke out worldwide, infecting more than one-third of the world's population at the time and killing tens of millions. The case fatality rate at this time is 2.5%. It is also called a Spanish fever but it is still unknown ,from where it firstly appeared. At that time, during the First World War, while information control was in place in every country, it was called the Spanish flu because the epidemic in Spain, which had not participated in the war, was reported, but the actual epidemic Seems to be the first to be confirmed in the United States. Originally there was seasonal flu itself, but this year everyone begins to notice that it is different because the number of patients continued to appear even after the epidemic. However, at that time, due to the influence of the war, there was a worldwide traffic of people.

Its effect all over the world,,,,

It spread rapidly all over the world. The first wave of the epidemic lasted from March to June 1918, but naturally converges in the summer. At this time, the infection rate was high, but the case fatality rate did not seem to be so high. However, in the second wave, which started around September of the same year, many people suffered from pneumonia and became seriously ill, resulting in a large number of deaths. This epidemic continues until the third wave after March of the following year, but it seems that the epidemic naturally converged as most of human beings acquired immunity with infection. During this time, a large number of infected people occurred on the Leviathan, a troop transport ship, a large number of workers were absent from work, and the production capacity of goods was significantly reduced. Medical care by infecting medical staff

Infectious diseases and discrimination

In addition to direct health hazards, there are concerns about various adverse effects on infectious diseases, including the economy, but one of the major problems is discrimination. In human history, discrimination was often justified before the prevention of epidemics against infectious diseases. In the olden days, witch hunting for plague, forced detention of Hansen's disease patients, and prejudice against AIDS patients in recent years are numerous, but unfortunately, even in the present age when information access has become so easy, coronavirus is the end There seems to be some discrimination against Asians and prejudice against the patients themselves. Fear of invisible things like viruses will spread like a kind of panic, but history proves that such discrimination does not have good results not only for the recipient but also for the victim. I am. Even in Japan, there were some negative statements about specific countries at the beginning of this epidemic, but I would like to cooperate all over the world to survive this crisis.

The new coronavirus infection is rapidly spreading worldwide and threatening people's health. 

Where does the new coronavirus invade and infect the human body?

The virus is transmitted by invading the mucous membranes of humans' eyes, nose, and mouth. First of all, please understand this firmly. It does not invade through intact skin.

Symptoms 

If you do not take any measures against infection, what is the route of infection from the mucous membranes of the "eyes, nose, mouth"?

1- By talking with an infected person for a long time (about 15 minutes or more) at a short distance (within about 1 m), the virus contained in the infected person's breath and cough splash invades through the "eyes, nose, mouth". It will infect you. Conversations within minutes are low risk. Also, simply passing by an infected person does not cause infection.

Basically, it is not considered to be transmitted through the air. The virus contained in the sigh and cough of an infected person evaporates and dries while drifting for 1 to 2 m, and the dried virus is considered to be infectious. However, in a poorly ventilated and humid room, the virus contained in the infected person's breath can continue to float in the room for some time and can be transmitted by inhaling it.

2- The virus can survive on metal or plastic surfaces for up to 3 days. Infection is caused by touching the doorknob or handrail to which the virus is attached, and unknowingly touching the mucous membrane of one's "eyes, nose, mouth" with the hand with the virus. (In one survey, people unknowingly touch the mucous membranes of their "eyes, nose, and mouth" about 10 times an hour.) Also, they are infected by sharing towels and tableware used by infected people. There is a possibility.

What are the symptoms of infection?

3- Symptoms similar to those of a common cold or flu, such as fever, malaise, sore throat, cough, muscle aches, and loss of appetite. Some people complain of abnormal taste, who do not understand the smell. Approximately 80% of people who are infected are asymptomatic, suggesting that the infection may have spread to the people around them (why a mask is needed in a crowd).

If the symptoms progress a little, you may feel stuffy when you move (at this time, see a doctor immediately).

How to prevent infection?

Preventing the invasion of viruses through the "eyes, nose, and mouth" helps prevent infection.

1. Avoid "Three Cs"

Let's live avoiding the three "dense" of "dense", "sealed", and "close".

2. Always wear a mask when entering a crowd

Be sure to wear a mask (cover your nose and chin well) when you are in a crowd (going to the grocery store, getting on the train, getting on the bus, etc.). When talking at close range, you can prevent infection by wearing masks for each other. Although it is not essential, wearing glasses for hay fever in addition to the mask may help prevent further.

3. Do not touch "eyes, nose, mouth" carelessly

Do not touch your "eyes, nose, mouth" carelessly. If you touch your "eyes, nose, mouth", be sure to wash your hands before doing so. (Both water, running water, and rubbing alcohol are effective.)