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MEDICAL SI-IJ\EY OF THK TOWN OF TAYTAY. 235 



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Another source of iiiosqiutoes is to' be found in tlie piuirUes which 

 collect around the wells, especially around those wells which syipply water 

 for laundry purposes. As there are some 14 or more of these distributed 

 through the town it will be seen that they are worthy of consideration. 

 Culex fatigans was found breeding in se\'eral of these puddles, while in 

 two cases ('. taytayensis was found. 



According to Doctor Nichols and Doctors Guerrero and Sevilla, who 

 studied the distribution of malaria in Taytay, the majority of the cases of 

 this disease were grouped along the large stream running north and south 

 through the western edge of tlie town, and truly enough it was along this 

 piece of water where the greatest numbers of M. rossii were taken. They 

 occurred at points nrore remote from the center of the town, as at the 

 well called "Pinagsalaan" and the large well southwest of the town ; but, 

 naturally, those mosquitoes found breeding within the limits of the town 

 would be the most dangerous. 



The very large majority of the people of Taytay use no mosquito nets; 

 in fact, it is probable that not more than a half dozen families have these 

 \'ery- necessary articles. It will thus readily be seen that the prevalence 

 of malaria, either latent or sporadically active, would be largely a question 

 of the abundance of malaria-carrying mosquitoes and the presence of 

 fudividuals with the nuilarial parasite in the blood ; in other words, the 

 town of 'J^aytay represents a locality in which no prophylactic measures 

 against malaria are in operation. 



The malarial parasite was found by Doctor Nichols in 3 per cent of 

 those examined ; o per cent of those persons who harbored malarial para- 

 sites showed no clinical symptoms of malaria. Enhirgeiuent of the 

 spleen was encountered in 2.1 per cent of the children examined and in 

 l.-t per cent of the adults. These facts indicate a rather low degree of 

 infection and 'aie boine out by the rather noteworthy fact that while 

 Myzouiyia russii was found in all the streams surrounding the town, 

 the total number of this species was small in proportion to the area sur- 

 veved. This degree of prevalence of the mosipiitoes is strikingly less than 

 that found at Olongapo ' and at Cervantes,- but it must of course be 

 understood that the topography of both these places is entirely different 

 fi'om that of Taytay, a luucli larger area being covered with watei' in both 

 Olongapo and Cervantes. 



As far as the danger I'loin nuilaria aiul the I'onditions of its pro})agalion 

 aie coiU'cined, 'I'aytay is probably as favoi'ably situated as any town which 

 I have seen in the I'hilippines. Of course the ideal situation for a 

 town would l)e oiu' on very higli ground away from streams or IVom tlie 

 i-egiou of an open expanse of water, but towns of such character nvv few 

 ii\ these Islands. 



' 77m'.v .foiinial, Kec. li I l<)07 . 2, .■)1.S. 

 ■ IhUI. (HIOS). 3, 33.5. 



