ted day 4 time because of the absence of anopheline mosquitoes. None of the rickettsioses were present. Although dengue typhoid fever, .and amebic dysentery were formerly regarded as widespread in the territory, NO cases were reported present in these three districts during the survey. Several cases of filariasis were reported from the Palau district and one case from the Saipandistrict. Tt should be bore in mind that some of thr variations occurring among the ishinds may be due to the fact that examinations on the Various islands were performed during different seasons of the year and by ditferent personnel. ee ee -- (+> Deseases of the eye. th tively. The changeable humid climate, crowded living conditions, sleeping on floors, low levels of nutrition, and poor standards of Sinitation were undoubtedly factors contributing to these diseases. Saipan Island had an unusually large number of acute respiratory infections for its examined populadion, Chronic twonsillitis and nasopharyngitis were widespread in this area. The prevalence rate for the 3 districts combined was 150.2 per 1.000 persors. The rate for the Palau district, 52.5, was far below those for Saipan and the Marshall Islands, 286.6 and 203.6, respectively. Leproxy. Eighty-six lepers from various parts of the trust territory were under treatment at the leprosarium on Tinian Island atthe time of the health survey. Of these cases, 25 were thought to be lepOCTOBER 1959 90132 Over 4,000 cases of diseases of the eye and. adnexa oculi were reported from this area: the prevalence rate was 198.4 per 1,000. Preryvghun. conjunctivitis, and sataract were greatest in occurrence. The intense sunlight, fine coral sands blowing about, the use of open fires, and frequent submersion in salt water are considered factors possibly contributing to the wide prevalence of pterygium and conjunctivitis. Cataracts were mostly of the senile type. Eighty-five cases of blindness were reported: 17 of these were bilateral and 65 were unilateral. It is believed that most of these were either congenital or resulted from phvsical mjury. In comparison with the other districts, the Mershall Islands had a strikingly high rate for pterygium, 146.5 per 1000 persons as compared with 89.8 for Saipan and 63.8 for Palau. Conjunctivitis was most prevalent in the Saipan district, while catsracts occurred most frequently in the Palaudistrict. alcute respiratory tufections. Acute respimitory infections were in common occurrence throughout the three districts. The over-all prevalence rate was 28.5 per 1,000 persons. This rage was much higher in the Saipan district than in the Marshall Islands and Palau districts, 65.2 per 1,000 persons as compared with 12.6 and 11.6 respec- ‘ 1219 ee a a ny a cre tee - HEALTH SURVEY IN PACIHC cr