Asunto(s)
Acinetobacter/efectos de los fármacos , Antiinfecciosos/farmacología , Enterobacteriaceae/efectos de los fármacos , Pseudomonas aeruginosa/efectos de los fármacos , Infecciones Urinarias/microbiología , 4-Quinolonas , Farmacorresistencia Microbiana , Francia , Humanos , Estudios ProspectivosRESUMEN
Four methods for the concentration of human enteroviruses in the waters of the river Furan were surveyed: the original method described by WALLIS, of adsorption of viruses on PE-60 polyelectrolyte; a modified version of the Wallis method; a method using a different polyelectrolyte available in France, the POE; the two-phase system described by SHUVAL. The best results were obtained when using the method of adsorption on polyelectrolytes, and the second method was finally chosen for field surveys.
Asunto(s)
Colifagos/aislamiento & purificación , Enterovirus/aislamiento & purificación , Microbiología del Agua , Adsorción , Electrólitos , Estudios de Evaluación como Asunto , Francia , Agua Dulce , Humanos , Métodos , Población Urbana , Contaminación del AguaRESUMEN
A survey was carried out from March 1972 to February 1973 to identify viral flora found in the river Furan ater St. Etienne. The 54 samples examined revealed the following data: 1) more accurate results are obtained when viral concentration values are expressed in terms of m3/sec., taking into account the flow of the river and eliminating the seasonal dilution factor; 2) rates of enteroviruses remain constant throughout the year, in spite of a relatively rapid spontaneous inactivation of the viruses; 3) rates of coliphages vary considerably according to seasons, with a notable increase in summer; 4) the two previous data are unrelated; 5) 147 enterovirus strains were isolated, of which 44% were polioviruses; 6) virulent and attenuated types 2 and 3 polioviruses were found simultaneously at certain periods; 7) only virulent strains of type 1 poliovirus were isolated; 8) this type of survey may be useful in controlling the endemic residual poliomyelitis in the region of St. Etienne.