The clinical manifestation and EEG of 20 cas-es of the patients with damage to nervous systemby pulmonary trematoaiasis are analyzed in the ar-ticle. Those cases made up 30. 3% of the totalnumber of the patients suffered form pulmonarytrematodiasis treated during the same period of thetime. Their clinical signs and symptoms, apartfrom those of Lungs, of skin, and of muscule,were headache, hemiplegia, aphasia, epilepsy,haemorrage in the subarchnoid space and impair-ment of multiple cranial nerves. besides, therewas also a case with damage to the spinal cord. Cases with abnormal EEG constituted 95. 4%of the patients with brain damage. The degree ofthe EEG abnomality varied from case to case ac-cording to the severity and extent of the lesions inpatient brains. Generally speaking, the abnormali-ty of EEG in the cases with cerebral impairmentwas more severe than that in the cases with dam-age only of meningeal. In the cases with circum-scribed granuloma formation the abnormal EEG al-so showed localization. Just for those reasons, authors believe that acontineous check up of EEG is more helpful in pre-dicting the involvement of lesion in the brain, theseverity of the damage and even the outcome of thedisease.

Aim To study the change of blood pressure in 1079 workers for fifteen years and the effect of anti-hypertension drugs therapy. Methods We investigated the blood pressure of 1079 workers who were enrolled in six organizations in the year 1983 and 1998 respectively. Results During the 15 years: (1)Mean value of blood pressure: systolic blood pressure increased 22 mmHg in man and 16.9 mmHg in women; diastolic blood pressure increased 9 mmHg in man and 12.7 mmHg in women (P<0.05);(2)The incidence of hypertension increased by 25.03% in man and 28.28% in women;(3)The prevalence rate of hypertension is 27.9 percent in people with initially normal blood pressure (1.86%/y) and 72.6 percent in initially broder line hypertension (4.84%/y);(4)The control rate of hypertension is 2.9 percent;(5)The incidence of stroke is highly related to hypertension (P<0.001);(6)46.6 percent patients had a regular drug therapy, mainly reserpini complex(25.2%);(7)Drug therapy has no obviously effect of the control of hypertension and the incidence of stroke. Conclusion Both the mean value of BP and the incidence of hypertension were increased with age. The control rate of hypertension was low and the drug therapy shows little advantage. We should do mach more works to popularize the knowledge of the prevention of hypertension. Improve people's self-prevention. Regular cheek should be given to the hypertension patients.

Hantavirus disease is a globally distributed, natural foci-related infectious disease caused by hantavirus, that maintaining persistent infections in their rodent hosts without apparent disease symptoms but seriously affecting the health safety of human beings. Development of the disease depends on the interaction between virus, rodent host and the individual person. Factors as significant geographical and seasonal variations, certain periodicity and contingency can all be related to the incidence of hantavirus disease. The disease is affected by climate and meteorological,environment, economic and social development, human life style and individual behaviors, etc.. Results from the analysis on main influencing factors and the nature of epidemics provide as with more evidence and information in setting up programs onto timely implementation of related prevention and control measures scientifically. By searching relevant scientific and technological literature, this paper summarizes the factors that affecting the nature of transmission and infection of hantavirus from related perspectives and factors including virus, host, climate and meteorological, meteorology, geographical environment, economic and social factors, etc.. In order to elaborate on the understanding of the epidemics and transmission characteristics of this kind of diseases, this paper provides evidence on prediction, prevention and control measures of hantavirus disease.