181 



Irigoyen (A. C). La Medicina social en la Argentina : La Acci6n 

 del Estado. — Andes Dept. Nac. Hygiene, Buenos Aires, xxv, 

 no. 2, March-April 1919, pp. 39-51. [Received 20th September 

 1919.] 



In reviewing recent sanitary and hygienic measures promulgated 

 by law in Argentina, mention is made of the fact that a population 

 of some 500,000 persons lives in danger of malaria, and that as a 

 result of prophylaxis the index of mortality within the last five years 

 has fallen from 21'7 per cent, in 1910 to 11 "9 per cent, in 1915. 



Brethes (J.). El Palex irritam, L., Par^sito del Cerdo.— .l>iaZes 

 Soc. Rural Argentina, Buenos Aires, liii, no. 10, Julv 1919, 

 pp. 443-414, 1 fig. 



Several examples of Pulex irritans have been collected from 

 piggeries in the south and west of the province of Buenos Aires. This 

 flea, which has previously been recorded only from man, dogs and 

 cats, is very abundant on pigs in Argentina, particularly upon sucking- 

 pigs, the larvae being found in the bedding. Der)natophilus penetrans 

 appears to be the only other flea that has previously been recorded 

 as infesting i^igs. It is suggested, with a view to exterminating 

 these parasites, that the pig-styes should be constructed of cement 

 as far as possible and should be kept very clean. 



Kraus (R.) & RosENBUscH (F.). El Dengue en la Republica Argen- 

 tina. — Rev. Inst. Bacteriologico, Buenos Aires, ii, no. 2, June 

 1919, pp. 221-223. [Received 24th September 1919.] 



Dengue has not previously been recorded in Argentina. In 

 February 1916 information was received of an epidemic having broken 

 out at Concordia and at Salto, on the opposite Uruguayan bank, where 

 almost the entire population was attacked. It was suspected that the 

 disease was brought direct from Spain, and a noticeable fact was the 

 prevalence of mosquitos, which had not been so numerous for many years. 

 The method of transmission of the disease is problematical ; persons 

 travelling to Buenos Aires and Montevideo were attacked without 

 it being possible to discover any contact cases in the houses or hotels 

 in which they had stayed, and although individuals suffering from 

 the fever arrived at these towns, no epidemic occurred there. No 

 experiments with mosquitos could be carried out in either town. 



At Concordia almost every house was a breeding-place for mosquitos 

 the species found being Culex fatigans, Wied., and Stegomyia fasciata, 

 F. (calopus) ; TaeniorJiynchus {Mansonia) titillans, Wied., was also 

 collected, but Phlehotomus was not discovered. There is evidence 

 that dengue existed in Argentina years ago in endemic form, and will 

 probably extend into those regions where its transmission by C. fatigans 

 and S. fasciata is possible. Guinea-pigs inoculated with the blood 

 of dengue patients showed no S3rmptoms of the disease. 



(C621) Wt. P1921/144. 1,500. 12.19. B.&F.Ltd. Gp.11/3. A 



