Halocatena marina sp. nov., a novel filamentous halophilic archaeon isolated from marine tidal flat and emended description of the genus Halocatena.

Three novel filamentous halophilic archaea, strains DFN5, RDMS1, and QDMS1, were isolated from the coastal saline soil samples of the intertidal zones located in different regions of Jiangsu Province, China. The colonies of these strains were pinkish-white due to the presence of white spores. These three strains are extremely halophilic and grew optimally at 35-37 °C and pH 7.

sp. nov., a filamentous halophilic archaeon isolated from Aiding Salt Lake.

A filamentous cell-shaped halophilic archaeon (strain AD-1) was isolated from Aiding Salt Lake, PR China. Its colonies on HCM7 agar plates were pinkish white, 1-4 mm (diameter), elevated and round. The optimum conditions for growth were observed at 42 °C, 4.

Description of gen. nov., sp. nov., sp. nov. and sp. nov., and genome-based taxonomy of genera and .

Three extremely halophilic archaeal strains (LT55, SQT-29-1 and WLHS5) were isolated from Gobi saline soil and a salt lake, China. These strains were most related to the genera and (92.6-95.

Halorussus vallis sp. nov., Halorussus aquaticus sp. nov., Halorussus gelatinilyticus sp. nov., Halorussus limi sp. nov., Halorussus salilacus sp. nov., Halorussus salinisoli sp. nov.: six extremely halophilic archaea isolated from solar saltern, salt lake and saline soil.

Six novel halophilic archaeal strains of XZYJT10, XZYJ18, XZYJT40, XZYJT49, YCN54 and LT46 were isolated from a solar saltern in Tibet, a salt lake in Shanxi, and a saline soil in Xinjiang, China. Sequence similarities of 16S rRNA and rpoB' genes among strains XZYJT10, XZYJ18, XZYJT40, XZYJT49, YCN54, LT46 and current members of Halorussus were 90.6-97.

Halorientalis salina sp. nov., Halorientalis marina sp. nov., Halorientalis litorea sp. nov.: three extremely halophilic archaea isolated from a salt lake and coarse sea salt.

Three halophilic archaeal strains, NEN8, GDY88 and ZY14, were isolated from a salt lake in Tibet and coarse sea salt samples from Guangdong and Hebei, China, respectively. These strains formed three separate clades (showing 94.4-95.

HIV, HCV, and HBV co-infections in a rural area of Shanxi province with a history of commercial blood donation.

Background: Unhygienic blood collection in the early 1990s led to blood-borne infections in Central China. This study aimed to estimate human immunodeficiency virus (HIV) co-infection with hepatitis C and B viruses (HCV and HBV) and their risk factors in a rural area of Shanxi Province with a history of commercial blood donation.

Methods: A cross-sectional study was conducted in 2004.

HIV and STIs in clients and female sex workers in mining regions of Gejiu City, China.

Objective: To investigate HIV/sexually transmitted infections (STIs) among female sex workers (FSWs) and clients in a mining region of China.

Goal: To estimate HIV/STI prevalence and to identify HIV risk factors among FSWs and miner clients.

Study Design: A cross-sectional study of 96 FSWs and 339 miner clients.

[Comprehensive evaluation on the potential risk for HIV infection in 12 villages with a history of former paid blood donation].

Objective: To learn the potential risk for human immunodeficiency virus (HIV) infection in 12 villages with a history of former paid blood donation, and to provide different measures for HIV/AIDS prevention and control.

Methods: Seven indexes were selected, including HIV sero-prevalence rates, hepatitis C virus (HCV) sero-prevalence rates, HIV/AIDS KAB (knowledge, attitude and belief), proportion of paid blood/plasma donation, risks on related behavioral information on sex and HIV/AIDS infections. Rank Sum Ratio (RSR) was performed to synthetically evaluate the potential risk of HIV infection in those 12 selected villages.

[Epidemiologic study on STD/HIV infections among tin mining workers in Gejiu, Yunnan province].

Objective: To estimate human immunodeficiency virus (HIV)/sexually transmitted diseases (STDs) related knowledge, the prevalence and risk factors for HIV/STDs among tin miners in Gejiu, Yunnan Province.

Methods: A cross-sectional study was conducted in tin miners working at 5 mining regions from March to June 2006 in Gejiu City, Yunnan Province. A total of 1796 miners were enrolled in the study, and a standardized questionnaire was administered probing socio-demographic factors, knowledge of HIV/STDs and sexual behavior.

[Study on the association between vaginal douching and sexually transmitted diseases among female sex workers in a county of Yunnan province].

Objective: To explore the epidemic characteristics of vaginal douching, human immunodeficiency virus (HIV) and other sexually transmitted diseases(STD) among female sex workers (FSWs) in Yunnan province.

Methods: FSWs were recruited to be investigated on their demographic data, drug abuse and sexual behavior, HIV/AIDS knowledge and procreation health status. Venous blood were collected to test for HIV, herpes simplex virus 2 (HSV-2) and syphilis while urine specimen was for morphine, cervical secretion for Gonorrhoea and Chlamydia trachomatis, and vaginal secretion for Trichomonas.

[A cross-sectional survey on human immunodeficiency virus infection in a former commercial blood donating community, Shanxi Province].

Objective: To determine the sero-prevalence of and the risk factors for human immunodeficiency virus infection among residents in a former commercial blood donating community, Shanxi Province.

Methods: A community-based cross-sectional survey was conducted among all residents aged 18 - 64 years in 4 villages in a rural county of Shanxi Province. A standardized structured questionnaire was administered to collect socio-demographic, medical and risk behavioral information.

[A cross-sectional survey on hepatitis C virus infection among residents aged 18-59 years in a former commercial blood donating community, Shanxi Province].

Objective: To determine sero-prevalence of and risk factors for hepatitis C virus infection (HCV) among residents aged 18-59 years in a former commercial blood donating community, Shanxi province.

Methods: A community-based cross-sectional survey was conducted among 660 randomly selected residents aged 18-59 years from 12 villages in a rural county of Shanxi province. Structured questionnaire was administered to collect socio-demographic,medical and risk behavioral information.

Epidemiologic study on human immunodeficiency virus infection among children in a former paid plasma donating community in China.

Background: Illegal plasma collecting activities in mid 1990s caused a large number of human immunodeficiency virus (HIV) infections in rural areas of central-eastern China. Although most of these activities have been stopped, there were few reports on secondary transmission from infected former plasma donors to their spouses and from infected mothers to their children. This study was to determine the extent of HIV infections among young children in a rural community with a large proportion of plasma donors.

[An epidemiological study on sexual transmission of human immunodeficiency virus among pre-marital group in Yining city, Xinjiang].

Objective: To study the human immunodeficiency virus (HIV) status through heterosexual transmission in Yining city and to provide information on effective intervention measures.

Methods: Cohort of HIV sero-discordant couples identified from 1997 to 2000 was formed. Proportional risk model was used to analyze the time of HIV sero-conversion and the related factors.