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The pattern of morbidity after typhoons in a tropical country

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Abstract

The paper examines whether there was a greater risk of certain infectious diseases after typhoons combined with floods in Manila, which experienced three typhoons in 1970 one of which was the most disastrous ever recorded. The data on morbidity of cholera, typhoid and clinical syndromes diagnosed as gastroenteritis, pneumonia, bronchitis and influenza from routine but active collecting were statistically examined and compared for seasonal trends with those of Baguio, a town which did not experience typhoons. In spite of increased rainfall, destruction and temporary breakdown of sanitation, no significant differences attributable to the typhoons were detected in any of the studied diseases. In particular, there was no increase in typhoid nor in cholera in this cholera endemic town. The observed higher incidence of respiratory and to some extent also of gastrointestinal diseases was not statistically significant.

Zusammenfassung

In der Arbeit wird geprüft, ob die Häufigkeit von bestimmten Infektionskrankheiten nach Taifunen in Verbindung mit Überschwemmungen in Manila, zunahm, wo 1970 3 Taifune auftraten, von denen einer der verheerendste war, der je vorher berichtet wurde. Die Krankheitshäufigkeiten von Cholera, Typhus, Gastroenteritis, Pneumonie, Bronchitis und Influenza wurden statistisch ausgewertet und mit den Häufigkeiten der gleichen Krankheiten in Baguio, einer Stadt ohne Taifune, verglichen. Trotz vermehrter Regenfälle, Zerstörungen und vorübergehendem Ausfall der sanitären Einrichtungen ergab sich kein signifikanter Anstieg in der Häufigkeit der Krankheiten als Folge der Taifune. Obwohl Cholera in Manila endemisch ist, ergab sich weder ein Anstieg von Cholera noch Typhus. Ein beobachteter Anstieg der Häufigkeit von Krankheiten der Atemwege und des Magendarmtraktes war statistisch nicht signifikant.

Resume

Dans ce mémoire, on recherche si la fréquence de certaines maladies infectieuses augmente à Manille après le passage de typhons suivis d'innondations. Pour ce faire, on s'est basé sur 3 typhons de 1970, dont l'un fut le plus dévastateur de mémoire d'homme. Le nombre de décès dûs au choléra et à la typhoïde ainsi que celui des diagnostiques cliniques de gastroentérite, de pneumonie, de bronchite et de grippe signalés dans les rapports de routine furent analysés statistiquement et comparés aux valeurs correspondantes de Banguio, ville qui n'avait pas été ravagée par des cyclones. Malgré l'augmentation des précipitations, la destruction des canalisations et l'absence momentanée d'installations sanitaires, on n'a pas pu déceler d'augmentation significative, dûe aux typhons, du nombre de cas de maladies infectieuses. Bien que le choléra soit endémique à Manille, on n'en a pas constaté davantage de cas, d'ailleurs de ceux de typhus. L'augmentation constatée des maladies des voies respiratoires ou du système gastro-intestinal n'est pas significative, elle non plus.

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Vèlimirovic, B., Subramanian, M. The pattern of morbidity after typhoons in a tropical country. Int J Biometeorol 16, 343–360 (1972). https://doi.org/10.1007/BF01553619

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