Various countries of the world are making great efforts to contain the emerging corona virus, also known as "Covid-19" by several means, and laboratory tests are at the heart of these efforts.
There are two main reasons why anyone should get a Corona virus scan: symptoms appear on it, and contact with people found to be infected with the virus.
The most common symptoms of Corona virus are fever (high fever), dry cough and shortness of breath.
But these symptoms are similar to the symptoms of regular influenza and colds somewhat, so it is necessary to consult a doctor to determine whether a virus test is necessary.
According to the science website "Science Alert", workers in medical facilities also need to conduct a coronavirus examination, especially those who have been in direct contact with people living with the virus.
The same applies to those aged 65 years or over who suffer from chronic health problems, such as heart, lung disease and diabetes.
For example, at the beginning of the outbreak of the Coronavirus in the United States, the Center for Disease Control and Prevention recommended testing for people with symptoms, but what surprised health officials was that many people had had a positive test result (had contracted the virus) without To show any symptoms.
This means that someone was infected with the virus and then transmitted the infection to others without any symptoms, according to the website "Science Alert".
Later, the US authorities changed the instructions, to examine anyone with "Covid 19" symptoms, with the doctor's approval.
What is the test?
For patients, the test process is easy and can be done almost anywhere, which is to take a sample from inside the nasal cavity, which is sent to the laboratory to find out whether the patients' cells are infected with the virus or not.
The examination lasts between 24-72 hours, and laboratory workers seek to examine the genetic material of the virus in the patient's cells to confirm infection.