A new test might be better at detecting past coronavirus infection, study finds
From CNN Senior Medical Correspondent Elizabeth Cohen
The world has come to depend on antibody tests to check whether someone's already had Covid-19, but a study in the town where the virus first spread in Italy shows that these tests are not completely reliable.
A different test -- one that looks for an immune cell, called a T cell -- was more effective, according to the study.
"This makes sense. It's well known that antibodies wane, but T cells have immunological memory," said Dr. Peter Hotez, an infectious disease specialist at Baylor College of Medicine.
In the study, researchers in Italy, the United Kingdom and the United States studied people in Vo, Italy, to learn more about testing accuracy.
They conducted blood tests on 70 people who had had confirmed cases of coronavirus about two months earlier.
Theoretically, all 70 of them should have had positive results on an antibody test. But the antibody test returned negative results in 16 of the cases, or 23%. The T cell test missed only 2 cases, or about 3%.
The researchers also tested 2,200 people who had tested negative for Covid-19. Of those, the T cell test returned positive results for 45 of them.
Zaia: "Abbiamo 46 morti in 24 ore, 216 persone in terapia intensiva, abbiamo passato i 1800 ricoverati. Siamo ai livelli di marzo".
Fonte: Adnkronos
Inviato dal mio Redmi Note 8 Pro utilizzando Tapatalk
Svizzera 8k nuovi casi con positività al 25%. I numeri sono da giorni abbastanza assestati a quel livello.
Invece come intuibile dalle notizie in arrivo da Varese e Como, in Ticino è stato registrato il record di positivi con 482 in 24 h, ora è legittimo pensare che sia il sud delle Alpi a vedere un aumento marcato assieme alla Svizzera francese.
BASILICATA
TAMPONI 1456
189 POSITIVI
LUCANI 167
RICOVERI 152 (-4)
T.I. 19 (+1)
GUARITI 4
DECEDUTI 3
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Veneto 3081 casi
77 ricoveri
6t.i.
46 morti
Inviato dal mio Redmi Note 8 Pro utilizzando Tapatalk
Nella tabella, il Veneto non è 4, ma 6 come ti
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