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Health

The keys to the first results of the seroprevalence macro study

Madrid / The preliminary results of the seroprevalence macro-study show that 5% of the population, 2.3 million Spaniards, have been in contact with the virus, almost ten times more than those diagnosed by PCR, which places our country very far from herd immunity.

These are just some of the conclusions that the main people in charge of the national study of epidemiology ENECovid19 have highlighted today, based on data from the first of the three waves of the investigation, carried out between April 27 and May 11.

These are its keys:

– 60,983 people have participated in the national sample, with which the participation has reached 74.7%. Of these, 96% have Spanish nationality and 29,255 are men (48.04%) and 31,642 women (51.96%). This report does not include the 3,234 participants in the island-specific study.

– The preliminary results of this first wave have only been obtained through the rapid test, although it will also incorporate laboratory analysis.

– These tests show that the estimated prevalence of antibodies in Spain is 5%, which is equivalent to the fact that 2,350,000 Spaniards have contracted the virus, almost 10 times more than the 229,000 diagnosed by PCR that appear in the statistics of the Ministry of Health.

– The lethality of 11.9% of daily statistics with accumulated data would be reduced to 1.1%.

There are hardly any differences by sex: 5% in women and 5.1% in men.

– By age, the prevalence is lower in babies, children and young people, and it is more stable in older age groups: for the 268 children under 1 year of age, the prevalence is 1.1%; in the 1,693 children under the age of 5 it was 2.2% and for the 2,857 between the ages of 5 and 9, it was 3%.

– 6.3% of essential workers have antibodies; also 6.1% of retirees, 5.8% of active workers, 4.5% of domestic workers, 4.2% of people with work disabilities, 3.7% in charity professionals, 3.6% of students and 3.3% of the unemployed.

– The more symptoms, the higher the prevalence: for people who have between three and five it is 8% and with more than 5 it rises to 14.7%. For those who have suffered a sudden loss of smell, it shoots up to 43%.

There is a marked geographic variability: from 1.1% in Ceuta to 14.2% in Soria, passing through figures higher than 10% in Castilla-La Mancha and Madrid. The neighboring provinces with the latter also move in this percentage.

– The same occurs with possible suspected cases of COVID-19: people with 3 or more symptoms or with sudden loss of smell show central aggregation, with prevalences close to 20%.

– In municipalities with more than 100,000 inhabitants, the prevalence almost doubles those with between 5,000 and 20,000: 6.4% compared to 3.8%. In those with less than 5,000 it is 4.3%, one tenth more than those with between 20,000 and 100,000. (May 14, 2020, EFE / PracticaEspañol)

(Automatic translation)

The related video news (May 14, 2020):


Comprensión

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La noticia habla de...  
A
unas medidas para evitar que la población se contagie de COVID-19.
B
un grupo de científicos que comenzarán a realizar un estudio relacionado con el COVID-19.
C
los resultados de un macroestudio realizado en España sobre la seroprevalencia.
Question 2
En el texto se dice que...  
A
esa investigación se realizó hace un par de meses.
B
se han realizado tests rápidos para obtener esos resultados.
C
ese macroestudio no tiene nada que ver con el COVID-19.
Question 3
Leyendo el texto entendemos que...  
A
el nuevo coronavirus afecta más a las mujeres que a los hombres.
B
más de un 20% de la población española es inmune al COVID-19.
C
la prevalencia es menor en niños y en jóvenes.
Question 4
Según el texto...  
A
hay más prevalencia en los municipios con más de cien mil habitantes.
B
la prevalencia no varía según la zona geográfica.
C
más del 50% de las personas sufrieron una pérdida significativa del sentido del olfato.
Question 5
En el vídeo se dice que...  
A
poco más de dos millones de españoles han generado anticuerpos contra el COVID-19.
B
los jóvenes y los niños son los que más se han contagiado por COVID-19.
C
a los expertos les sorprendió que España esté lejos de la llamada 'inmunidad del rebaño'.
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Vocabulario

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La escritura correcta de "60.983" es...  
A
"sesenta mil novecientos ochenta y tres".
B
"sesenta mil y novecientos y ochenta tres".
C
"sesenta novecientos ochenta y tres mil".
Question 2
La escritura correcta de "100.000" es...    
A
"un millón".
B
"cien mil".
C
"cien y mil".
Question 3
La escritura correcta de "1.693" es...  
A
"miles seiscientos y noventa y tres".
B
"mil seiscientos noventa y tres".
C
"mil y seiscientos y noventa tres".
Question 4
" 96 %" se lee...  
A
"noventa y seis por ciento".
B
"noventa y seis para cien".
C
"noventa seis para ciento".
Question 5
" 5%" se lee...  
A
"cinco para cien".
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"cinco por ciento".
C
"cinco por cienes".
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