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19 de abril de 2024
COVID
Los anticuerpos duran hasta 12 meses en el 70% de recuperados Así lo afirma un estudio científico chino. Las personas de la franja de edad de entre 18 y 55 años desarrollaron niveles más altos de anticuerpos. jueves 8 de julio de 2021 07:46
Los anticuerpos contra el coronavirus SARS-CoV-2 pueden durar hasta 12 meses en más de un 70% de los pacientes que han superado el covid, según un estudio publicado por investigadores chinos que recogen los medios oficiales del país asiático.
La investigación también concluye que la vacunación puede "restringir de forma efectiva la propagación" del coronavirus, ya que fomenta una respuesta inmune similar a la manera en la que los cuerpos humanos generan anticuerpos humanos contra los virus vivos.
El estudio fue llevado a cabo por una subsidiaria de la farmacéutica estatal Sinopharm -que produce dos de las vacunas aprobadas por el Gobierno chino- y el Centro Nacional de Investigación de Medicina Traslacional de la Universidad de Jiaotong, en Shanghái.
Para su elaboración, se recogieron unas 1.800 muestras de plasma convaleciente de 869 personas que superaron la covid en los 12 meses anteriores en Wuhan, la ciudad central china donde se registró el primer brote mundial del coronavirus en diciembre de 2019.
Según los resultados, en nueve meses los niveles de anticuerpos cayeron hasta el 64,3% con respecto al nivel de cuando los pacientes contrajeron el virus, y desde entonces se estabilizaron hasta el duodécimo mes.
La respuesta inmune fue más fuerte en hombres que en mujeres durante las primeras etapas de la infección, pero la diferencia se diluyó con el tiempo hasta casi desaparecer tras doce meses. Asimismo, las personas de la franja de edad de entre 18 y 55 años desarrollaron niveles más altos de anticuerpos.
Según el Grupo Nacional de Biotecnología de China -la filial de Sinopharm que lo elaboró-, este estudio es el más extenso de los que han comprobado la continuidad de la respuesta inmune en pacientes recuperados de la covid. EFE