[Environmental sanitation and typhoid-paratyphoid infection morbidity in Valencia].
BACKGROUND
We intend to study the evolution of morbidity by typhoid-paratyphoid infections (TPI) in Spain and Valencia (1940-1990) as well as TPI morbidity and degree of sanitation in Valencia.


METHODS
Data related to morbidity, as well as the sanitation basic data in Valencia, have been obtained from official sources. Morbidity rates belonging to Spain and Valencia have been calculated.


RESULTS
It is found a decreasing trend of morbidity in Spain and Valencia. By Health Areas, a great decrease stands out in Valencia-City and, as a general rule, the highest rates belonged to the lowest automatic chlorination percentages. In general, there is an improvement in chlorination, sewers and sewage-depuration equipment.


CONCLUSIONS
TPI morbidity in Spain shows a decreasing trend in both cases; it is more evident in Valencia when establishing a relation of TPI morbidity with the degree of hygiene by Health Areas of Valencia, an inverse relation appears and the highest rates belong to the interior Areas. The conclusion is that there is a remarkable improvement in the hygiene general situation in Valencia; in the city as well as in all the Health Areas.
González Arraez
J I
JI
Area de Medicina Preventiva y Salud Pública, Facultad de Medicina, Universidad de Valencia.
Alfonso Sánchez
J L
JL
Talamante Serrulla
S
S
Cortina Birlanga
S
S
Gil Mari
A
A
D002713:Chlorine; D004782:Environmental Health / Q000706:statistics & numerical data*; D006801:Humans; D009017:Morbidity / Q000639:trends; D010284:Paratyphoid Fever / Q000453:epidemiology*; D012499:Sanitation / Q000706:statistics & numerical data*; D013030:Spain / Q000453:epidemiology; D014435:Typhoid Fever / Q000453:epidemiology*; D014505:Urban Population / Q000706:statistics & numerical data*
D002713:Chlorine
Saneamiento del medio ambiente y morbilidad por infecciones tifo-paratíficas en Valencia.