Contamination of soil, leaves and vegetables by polychlorinated biphenyls in Xiamen region, China

The paper aimed to identify the primary of polychlorinated biphenyls(PCBs) in the Jiulong River Estuary, investigate the spatial distribution of PCBs contamination in the environment, localize the atmospheric source and evaluate ongoing PCBs emissions by analyzing soil samples collected along the Jiulong River region. In addition, the accumulation of PCBs in the human food chain was quantified by analyzing leaf of orange trees and vegetable samples collected along a gradient of soil/atmospheric contamination moving away from the source. Consequently, the impact on the human health and the ecosystem was quantified, different management options were proposedto reduce this impact and to carry out research on organic contaminants along the Jiulong River and Xiamen region.

重庆两江新区201例成人登革热临床特点分析

目的:提高临床医师对登革热的认识水平。方法:回顾性分析2019年8月至10月两江新区第一人民医院确诊收治的201例登革热患者临床资料。计数资料采用卡方检验,计量资料采用t检验。结果:201例登革热患者中,男性97例(48.26%),女性104例(51.74%),>60岁患者(老年组)40例(19.90%)。主要临床表现为发热(99.00%)、乏力(85.07%)、肌肉酸痛(85.57%)。实验室检查显示,多数患者有中性粒细胞减少(90.53%)、血小板减少(70.00%)、肝功能损害(30.00%)。老年组血小板下降发生率较青中年组高(66.67%vs. 85.25%,P=0.04)。此外,老年组肝功能损害发生率较高(50.00%vs. 25.64%,P=0.01),且肝功能损害更重。病原学检查显示,本地感染患者均为基因1型,2例输入性病例分别为基因2型和基因3型。治疗主要以对症支持治疗,多数为轻症,预后好。结论:本次登革热流行主要为基因1型,以发热、乏力、肌肉酸痛为典型临床表现,多伴有中性粒细胞及血小板下降、肝功能损害,老年患者更为明显,需引起高度重视。