After one confirmed case, the state of New York fears “centaines” of polio cases

Des analyzes des eaux usées were carried out in this American state after the confirmation of a case of poliomyelitis. Elles ont révélé des traces du virus causing this illness, ce qui voudrait dire qu’il circule in the population.

The health authorities of the state of New York reported on July 21 last a case of poliomyelitis in Comté de Rockland. L’homme est atteint de paralysie, l’une des consequences possibles, mais rares, de cette maladie. Des analyzes were carried out in the samples used from the state where “the virus was detected in the samples used from June and July”, in the Comté de Rockland, but also from Orange, it is. explained in a statement.

“Les New-Yorkais must know that for every case of paralytic poliomyelitis observed, there may also be hundreds of other infected people,” declared la commissaire à la santé de l’État, Mary T. Bassettwhich explains that what case identified would not have been like la parte emergée de l’iceberg.

“Ce que nous savons est clair: le danger de la poliomyélite est présent à New York aujourd’hui,” she declared.

Des tests ont été menés dans les eaux usées pour estimer la présence du poliovirus, and on August 5, le CDC (Centre american pour le control et la prevention des maladies), confirmed the presence of 11 positive samples remontant à juin et juillet, relées à l’identified infected individual: six in the Comté de Rockland, five in that of Orange.

These results show that the virus is circulating in the population, but hormis le cas de paralysie cité ci-dessus, no other infected individuals have been identified for the time being.

“Des centaines, voire des milliers de cas” potentials

Poliomyelitis is caused by a virus called poliovirus and “most people who are infected (around 72%) have no visible symptoms”, the CDC wrote to them. More serious symptoms appear in rare cases – moins de 1% – comme la paralysis, mais aussi la paresthesie (senstir des fourmillements, picotements…) or la meningitis.

In what sense, “il n’y a pas qu’un seul cas de poliomyélite si vous voyez un cas paralytique”, declares Patricia Schnabel Ruppert commissaire à la santé du comté de Rockland à la BBC. “La plupart des cas sont asymptomaticatiques ou légmentre symptomaticatiques, et ces symptoms sont souvent manqués”, she explained, “il ya donc des centaines, voire des thousands de cas qui se sont produits pour que nous puissions voir un paralytique cas. “

Paralysis is the most severe manifestation of this disease and leads to death in 2 to 10% of people affected by that symptom, “because the virus affects the muscles that allow breathing,” explains the CDC.

The transmission of this disease “is exclusively interhumane et s’effectue essentially par voie feco-orale en particulier pari l’intermediate d’eau souillée, d’aérosols ou d’aliments contaminés par les selles”, explains l’Institut Pasteur.

Comment a été infected le patient paralysé?

It is possible to transmit the virus without symptoms and “infected persons can transmit the infection when the virus persists in the gorge (a week) and in the excrement (3 to 6 weeks or more)”, emphasizes l. “Pasteur Institute.

The identified patient was infected with a type 2 Sabin polio virus, explained New York health authorities. The results indicate that the man was infected by an individual who received oral polio vaccine (OPV) “qui n’est plus autorisé ni administré aux États-Unis”, where it is not used as an injectable polio vaccine (IPV). At the identified source, the passage of an inactive vaccine, like the one used outre-Atlantique, cannot have an effect, assures the Santé de l’État department in New York.

Le malade ayant fait un voyage en Europe avant de ressentir les premiers symtoms, comme l’écrit ABC, c’est là qu’il aurait donc pu attraper la polio.

With VPO – which contains live attenuated polioviruses – there is a rare “possibility of inducing disease in certain vaccinated persons and the introduction into the environment of live poliovirus strains, certain attenuated ones but which can establish transmission chains in les contextes où la couverture vaccinale is weak after excrétion par les personnes vaccinées”, wrote l’Institut Pasteur.

“All unvaccinated children and adults should receive their first vaccination immediately”

Or, even the vaccination against polio approaches 80% in the State of New York, elle n’atteint que 58.68% in the county of Orange, and 60.34% in Rockland. The calling authorities, so that the population does not receive doses to be protected from possible contamination.

“It is worrying that poliomyelitis, a disease that was largely eradicated by vaccination, is now circulating through our community, in particular, if there was a low level of vaccination against this disease” in certain territories, the commissioner declared health. Comté d’Orange Irina Gelman. “Exhorte tous les résidents non vaccinés du comté d’Orange à se face vacciner dès que possible”, she added.

“All unvaccinated children and adults should receive a first polio vaccination immediately,” said Patricia Schnabel Ruppert.

D’après les dernières données du CDC, 92.6% of the American population is vaccinated against poliomyelitis, and must be protected against transmission, which limits craintes d’une épidémie d’ampleur, and not inquiète pas. outre mesure les experts en santé publique selon le Los Angeles Times, which appellant still à la vaccination.

“Two doses of poliomyelitis vaccines are 90% effective against poliomyelitis, while three doses are more than 99% effective in preventing the disease,” wrote the ECDC (Centre européen de prevention des maladies).

In France, this vaccination was part of the 11 mandatory vaccines, and “le dernier cas de poliomyélite autochtone remonte à 1989” while “le dernier cas importé à 1995, tous deux concernant des adultes”, assures the Haute Autorité de Santé, but vigilance remains constant on what subject. Fin juin, des traces d’une forms of poliomyelitis had the effect retrouvées dans les eaux uses de Londres.

Salome Vincendon BFMTV journalists

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