The symptoms of Covid-19 are as follows: fever or a feeling of fever, fatigue, cough and sore throat, headache, body aches, shortness of breath. The sudden loss of smell, without nasal obstruction, and total disappearance of taste, are also symptoms that have been observed in patients.
How many cases of coronavirus in the world?
If you are wondering, how many cases of coronavirus in the world? According to recent details shared by WHO these are the current cases of coronavirus worldwide. The coronavirus COVID-19 is affecting 213 china and territories around the world and 2 international conveyances, with 25.8M Cases, 17.1M Recovered, and 858K Deaths. These are the cases of coronavirus worldwide.
Why is COVID-19 spreading quickly?
The Covid-19 virus is considered to have a particular contagion capacity. Indeed, at present, it is estimated that its reproduction rate is 2.3 that is to say that an affected person will, on average, infect 2.3 non-sick people.
The Covid-19 virus has a very significant multiplication capacity in the body. For example, we find a lot of it in nasal secretions: a thimble of secretion would contain hundreds of billions of viruses!
How many cases of coronavirus in the world?
The Covid-19 virus is extremely transmissible. This is linked to its mode of contamination: the virus passes from person to person through aerosols, droplets expelled when an infected person sneezes or coughs. These droplets can also be found on objects that you touch, and since you tend to touch your face, you can contract the virus in this way.
Thus, the significant capacity of the virus to multiply and its mode of contamination explain the rapid spread of the disease in the world.
It was first present in animals. By various and spontaneous genetic phenomena, this virus would have had the capacity to “cross the species barrier”, until being able to infect humans and adapt to it.
Patients with a history of cardiovascular disease: complicated high blood pressure, history of stroke or coronary heart disease, cardiac surgery, insulin-dependent diabetics who are unbalanced or who have complications secondary to their pathology; people with a chronic respiratory pathology liable to be infected during a viral infection.
Patients with chronic renal failure on dialysis; cancer patients under treatment and people with low immunity are more vulnerable.
People suffering from congenital or acquired immunosuppression, patients with stage B cirrhosis, people who present a body mass greater than 40, pregnant women in the 3rd trimester are also vulnerable.
What is the incubation period of the virus?
The incubation period of a virus corresponds to the time between the entry of the virus into the body and the development of the disease, that is to say, the appearance of the first symptoms.
For Covid-19, the WHO now estimates that this period varies between 1 and 14 days, with an average time of 5 days. A relatively long period, therefore, raises another question: are we contagious during incubation?
Symptoms and diagnosis of COVID-19
Currently, the main test used to diagnose infection is used to reveal the presence of the viral genetic material within samples collected in the nose or the throat of patients. This test is for diagnostic purposes: it reveals an infection in progress at the time of the sample.
Other tests are gradually starting to appear to detect an infection. Their principle is based on the detection of antibodies that circulate in the blood of patients.
These antibodies are produced by the immune cells during infection with the virus to destroy it. They can persist for a long time in the blood: also, they are indicative of a past infection.
Are antibiotics effective for the treatment of Covid-19?
Unfortunately no, antibiotics are ineffective against Covid19. Covid19 is a disease linked to a virus, and antibiotics are only active against bacteria. It is therefore useless to take it in the prevention of the disease, or after suggestive symptoms.
Is the flu vaccine effective?
No, the flu shot does not protect. The influenza virus and the coronavirus are very different!
However, vaccines are developed to fight against one type of virus in particular, and not against several viruses. So no double immunity possible!
What is collective immunity?
When a person is confronted with a pathogen such as a virus or a bacterium, his body sets up a defense process: his immune system produces antibodies, specific molecules of the pathogen, which bind to him and cause its destruction.
These antibodies then continue to be produced and circulate in the blood for a more or less long period after recovery: it is the principle of “individual” immunity which allows the body to protect itself from a second infection by the same pathogen.
The proportion of people required to establish herd immunity in a given population varies depending on the pathogen involved. Countries with confirmed coronavirus cases opt for this method.
Does alcohol consumption protect against Covid-19?
The WHO recently made an update on the subject: contrary to popular belief and rumors, alcohol does not protect against infection.
The Organization also warns of the risks of overconsumption of alcohol during the period of confinement.
How long does the virus survive on surfaces?
Various studies have shown that the duration ranges from a few hours to a few days depending on the case. This persistence of the virus on surfaces clearly shows the value of washing your hands very regularly with soap to avoid contamination.