[ad_1]
There are not strong enough immune defenses – The case refers to a young Roman woman and shows once again that there are cases in which the immune defenses of our body cannot protect us from the attacks of the virus. In Ansa, the woman said that she began to present symptoms of the virus in mid-October, “but the first rapid swab, on October 13, gave a negative result.”
The first disease – The symptoms persisted, however, says the “Corriere della Sera”: on October 20 the second swab arrived, the molecular test carried out in the Fiumicino drive-in, which instead turned out positive. The woman, who presented pain in the muscles, only some lines of fever and severe respiratory difficulties, was always followed at home by the family doctor and on October 30 the molecular swab in Sant’Andrea was negative. Second negative test also on November 13.
Relapse – Then relapse. A few days ago the woman’s father fell ill, apparently due to an outbreak at the workplace. Everyone in the family was tested and the young woman tested positive for the molecular again: with the virus, severe symptoms returned, from high fever to muscle aches.
Molecular tests and rapid tests – One case, that of Rome, which raises the problem of the reliability of rapid tests, since the first swab, which is fast, said that the woman was negative. On the other hand, today the data shows that rapid tests guarantee “high sensitivity” (70-86%) and “high specificity” (95-97%): in short, there are and there are no margins of error. capable of detecting the virus in small quantities, either at the beginning or at the end of the infection.
Relapse or reinfection? – In addition, there is the problem of bis disease: relapse or reinfection? There are many cases in which it was found that Covid remained in the patient’s body with swabs that remained positive for a long time or with negative and positive tests after a very short time. In this case we generally speak of relapse. However, there are also cases of second infection: this means that not all of them produce antibodies capable of defending them against the virus in case they find it a second time. Especially if the first faces the symptoms were mild.
Vaccine safety – However, it is difficult to determine with certainty if it is a second infection: I would take the genetic sequence of the virus in the first and in the second disease, comparing the differences. We certainly know that this eventuality will not occur with the vaccine, capable of developing a stronger response to the virus from the immune system than the physiological one. In short, even those who have already fallen ill and recovered should be vaccinated: infection, even if it is followed by recovery, does not offer any guarantee of immunity.
[ad_2]
