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La neumonía atípica reaparece tras el virus Covid, según investigadores suizos
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"From a scientific point of view, it was absolutely fascinating", Patrick Meyer Sauteur, from the University Children's Hospital in Zurich, told the Keystone-SDA news agency.
The measures taken during the Covid-19 pandemic also led to a decline in other pathogens, but all of them then rapidly re-appeared, with the notable exception of mycoplasma, explained the researcher. Only a few isolated outbreaks were reported, according to a study by the same team published in July.
The pause is now well and truly over, and we are back to pre-pandemic levels, with Switzerland even recording record figures. "The rise in infections in recent months is very impressive," said Sauteur.
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"We'll have to keep a close eye on how the situation develops," he says. After three years' absence, immunity in the population is weaker, which could result in more numerous and more serious infections. For the time being, however, this is not the case.
What's more, given the long absence of the bacterium, it's possible that medical staff no longer think about it, even when the corresponding symptoms are present, said the specialist. The resurgence of mycoplasmal infections was observed between April and September 2023, according to monitoring conducted at 44 sites in 24 countries.
Main cause of pneumonia in children
Atypical pneumonia is caused by the bacterium Mycoplasma pneumoniae. Before Covid, it was the main cause of bacterial pneumonia in children.
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M. pneumoniae is endemic worldwide, with regular outbreaks, for example in families, schools or military sites. The disease is most common in hot weather, in summer and early autumn.
It is transmitted by droplets from close contact. The disease is considered highly contagious. M. pneumoniae is a frequent cause of community-acquired pneumonia, mainly in children and adolescents, but also in adults.
To explain the prolonged absence of the bacterium, in July the authors cited the longer generation time (six hours, compared with 10-20 minutes for other conventional bacteria) and slower incubation (one to three weeks) of mycoplasmas.
Discovered in the 1940s, this micro-organism was long considered to be a virus, not least because of the difficulty of cultivating it. It can cause numerous complications, some of them serious, such as dermatological lesions and damage to the central nervous system. In recent years, the spread of antibiotic-resistant mutants has posed an additional challenge, particularly in Asia.
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