What is COVID-19 – Coronavirus Infectious Disease 2019?
COVID-19 is a type of pneumonia caused by a virus called SARSCoV-2. The virus first appeared in Wuhan, China at the end of 2019. The original English name of the disease, COVID-19, stands for “Coronavirus Infectious Disease 2019”
What are the symptoms of COVID-19
Symptoms usually start 4 or 5 days after infection, and some people may not have symptoms until 2 weeks later, and some people have no symptoms at all. A symptomatic infected person may develop symptoms including: fever, cough, headache, sore throat, abnormal sense of smell or taste, fatigue, chills, muscle aches and difficulty breathing. Some people experience digestive problems such as nausea or diarrhea. Skin symptoms may also occur, such as reddish-purple spots on the fingers or toes. But it’s unclear why or how often this happens. For most people, symptoms get better within a few weeks. But a small number of patients, especially those who are elderly or have multiple chronic diseases, will deteriorate to the point where they cannot breathe on their own and need to be intubated for ventilator treatment. In the worst case, it may lead to death. Although children can get COVID-19, they are less likely than adults to develop severe symptoms.
How COVID-19 Spreads
The virus of COVID-19 is mainly transmitted from person to person. When an infected person coughs, sneezes, or talks near others, the virus is spread to others nearby by tiny particles in the lungs and airways of the infected person. This phenomenon can be easily observed in past cluster infection events, such as in various means of transportation, including cars, buses, MRT, boats, and airplanes, or indoor gatherings, such as catering, conferences, etc. Transmission is easier between people living together, so household infections often occur. Large-scale cluster infection events may also occur if infected persons seek medical treatment or are hospitalized in the hospital. It is also possible for the few reported viruses to spread from infected people to animals, such as pets. There is currently no evidence that people can get the virus from pets. It is worth noting that even if an infected person does not show any symptoms, it is possible to transmit the virus to others.
Those at risk of serious illness
This depends on the patient’s age and health. The risk of severe disease increases with age. The incidence of severe illness is also higher if you have other health problems, such as severe heart disease, chronic kidney disease, diabetes, chronic obstructive pulmonary disease, HIV infection or obesity. Suspected to be infected with new coronary pneumonia, how to detect and confirm the diagnosis? The tests used to diagnose COVID-19 are “nucleic acid tests” or “antigen tests”. Nucleic acid tests look for the genetic material of the virus in the sample, while antigen tests look for the protein of the virus in the sample. Antigen tests can give results faster than most nucleic acid tests, but they are not as accurate as nucleic acid tests. They were more likely to give a “false negative” result: a test that came back negative when the patient was actually infected. The method currently used around the world is a more accurate nucleic acid test.
There is also a blood test that shows whether a person has had COVID-19 in the past. This is called an “antibody test”. Usually only used as epidemiological surveys, use them to know how many people in a certain area are infected. How to prevent new coronary pneumonia? From the experience of Taiwan and other countries, strict epidemic prevention and control measures, coupled with wearing masks and disinfecting with alcohol or cleaning solutions, can effectively prevent the spread of the virus. Another effective method is to make the public immune to the new crown pneumonia virus. If enough people are vaccinated to become immune, the virus will be unable to infect or cause severe symptoms. Therefore, experts believe that a vaccine will be one of the most important ways to control the new crown pneumonia pandemic.
At present, countries around the world are doing their best to study the vaccine for new coronary pneumonia. In the United States, the first vaccines were launched in late 2020 through emergency authorization. At present, many countries also introduce vaccines of different brands through emergency authorization. But while we wait for vaccine coverage to reach the majority of the population, there are other steps that can be taken to slow the spread. To protect themselves and others, everyone should be doing these things, even those who have been vaccinated:
1. When you need to go out, please wear a mask. When wearing it, please make sure that the mask covers your mouth and nose. When removing the mask, make sure not to touch your eyes, nose or mouth.
2. Maintain “social distance” and avoid contact with sick people. If you need to go out, please try to keep a distance of at least 1~2 meters from others.
3. Wash your hands frequently with soap and water. Especially when touching surfaces that are frequently touched by many people (such as doorknobs or railings). You can also use hand sanitizer to clean your hands, and using alcohol is also a convenient and effective method.
4. Avoid traveling to countries or regions where COVID-19 is prevalent. COVID-19 is a dangerous and highly contagious disease. In order to protect the health of yourself, your family, friends and others, please follow the relevant recommendations, and let us do our part to prevent the epidemic!
Related Tops
Reference
Useful Organization
World Heath Organization – Covid 19
Living safely with respiratory infections, including COVID-19
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