It is now known that people who contract Covid-19 can be asymptomatic. Patients infected and cured of the disease receive only one injection of the anti-Covid vaccine against two doses for the others (except for the Janssen vaccine). Problem: Without symptoms, how do you know if someone has contracted Covid-19? How then do you know if it requires one or two doses of serum? This is where the serological test can play a role. Who ? Can serology become systematic before vaccination against Covid-19?
Why impose a serology before an injection?
The stakes of such a maneuver are multiple. First, the serological test, which looks for the levels of antibodies in the blood following an infection, would make it possible to identify that a person has already been infected with the virus. For people who have had symptoms, the instructions are clear: a single dose of vaccine is given. This is because the antibodies produced after a natural infection persist for a few months in the body. Therefore, the injection of serum acts like a vaccine booster. However, many patients have little or no symptoms. It could therefore be that a serology is automatically offered on the day of the first appointment, by means of rapid diagnostic orientation tests, also called TROD. They have the advantage of giving a result within 15 to 20 minutes. The benefits are many, because the serological test would avoid receiving a second dose and make it available for a first injection in another person. In addition, inoculating two doses of vaccine in a patient cured of Covid-19 could generate a greater stimulation of the immune system. Offering a serological test during a first injection would therefore save time and save doses.
What does the scientific public authority think of this?
Until then, the serological test was dispensable. However, the Professor and President of the Haute Autorité de Santé (HAS), Dominique Le Guludec, indicated on BFMTV that “ we are going to suggest, provided that it does not slow down the vaccination process, that possibly at the time of the first dose, we see if you have antibodies which allows you to give or not the appointment for the second dose “. Therefore, in the coming weeks, according to the HAS, the serological test “ could be made systematic “.
