3rd Sabbatical Cycle Disease Outbreaks in the Philippines (1961-1967)

1961 A pandemic of El-Tor-type cholera began in south-east Asia during 1961. Many members of the medical profession, as well as government officials and the public, were confused by the relationship between the disease caused by the El Tor organism and classic Asiatic cholera. The authors observed large numbers of cholera patients admitted to San Lazaro Hospital, Manila, early in the Philippine epidemic, and in the present communication they draw attention to certain clinical and epidemiological features of so-called El Tor cholera.

1962 Rice Tungro disease was recorded as early as the 1940s in major rice growing regions and reduced grain yield by 30% amounting to 1.4 million t annually (Serrano, 1957). Major outbreaks have occurred from time to time during 1962 (3rd cycle 2nd year)-1998. In 1970 (4th cycle 3rd year), outbreaks damaged rice on 100,000 ha in central Luzon and at Cotabato (Ou et al., 1974). Yield losses due to tungro in 1971 (4th cycle 4th year) were estimated as 456,000 tonnes of rough rice (Ling et al., 1983).

1963-1964 Dengue has assumed new characteristics in the Philippines producing frequently a deadly hemorrhagic disease rather than its usual symptoms. Several large epidemics have occurred, with thousands of cases and a high death rate.

1964 Acute respiratory infections have been found to be a common cause of morbidity in young adults in the tropical setting of the Philippines, with incidence rates equalling those of colder northern countries. Influenza outbreaks have occurred as part of a worldwide pattern and parainfluenza infections are common.

74 cases of Amoebic colitis liver abscess in 1964

83 cases of Amoebic colitis liver abscess treated during 1967 (3rd cycle 7th year) to 1975 (5th cycle 1st year)

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3rd Sabbatical Cycle Disease Outbreaks in the Philippines (1961-1967)

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