A third infected with the coronavirus preschoolers are able to transmit the disease to others, found researchers from the German research centre for infections. Among adults, nearly half, however, children represent a great danger: kids hard to get to wear masks, do not touch your face with your hands and limit the number of contacts. Especially difficult to comply with such security measures in kindergartens, which already began to open. If the child is sick, a virus will pick up all the people around him, vulnerable to infection, have informed “news” the Russian experts, IA ЕАОMedia.
However, children carry the disease for a shorter period and therefore are carriers of the infection at least a long period.
All are equal before SARS-CoV-2
A team of foreign scientists under the leadership of Christian Dresden from the German research centre for infections has studied the contribution of people of different ages in the spread of the coronavirus. The study involved 77 996 people from Germany, 3303 of them had tested positive for SARS-CoV-2.
To find out exactly when infected becomes a danger to people, experts have studied the concentration of coronavirus in the respiratory tract, taking the swab from the nasopharynx of the participants. Scientists came to the conclusion that the threshold value (from which the person becomes contagious) is 250 thousand RNA copies per 1 ml of liquid. This viral load was 29% of the subjects from 0 to 6 years old, 37% had from 0 to 19 years, and 50% of people over the age of 20.
In an earlier work by these same scientists taken from nasopharynx swab were transferred to human cells in a Petri dish. And concluded: that the probability of infection was greater than 5%, the number of viral particles should be less than 250 thousand, — said a leading researcher of the laboratory of molecular biology, Moscow state University. M. V. Lomonosov Novel Zinovkin. — So was defined the viral load required for infection.
And identified the number of copies of RNA in children and adults differed slightly, scientists have attributed the slight difference to the instrument error. Thus, concluded the researchers, children is capable of infecting almost at the same level as adults. However, preschoolers are a great danger for the simple reason that kids are harder to observe safety precautions. Is difficult to make them disinclined to wear a medical mask and gloves especially, do not touch the face, not in contact with others and wash hands regularly.
— Today researchers recognize that unlike adults, children mostly endure sickness easily or completely asymptomatic, — said the employee of the scientific-clinical Department of MHZ and the AIDS International training and methodological center for human Virology, medical Institute of PFUR Elena Belova. In particular, they have less common symptoms such as fever, cough, shortness of breath. Although there are kids who need hospitalization. Among them, first and foremost, patients with obesity, diabetes, and autoimmune diseases.
It is impossible to estimate the level of virus in eyes, to understand hazardous child to others or not. And not always the manifestation of symptoms is directly related to the transmissibility. But at the slightest sign of the disease should immediately consult a doctor and be examined, and to wear a mask on the child and family members, experts said.
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