51.   WHO used to be considered the flagship of the U.N. system, spearheading effective campaigns against infectious diseases and man-made woes like smoking, excessive drinking and unsafe sex.

52.   Health authorities in West Australia state are considering isolating an HIV-positive woman who has continued to have unsafe sex with men met at night spots.

53.   The paper claimed the role of the HIV treatment drug AZT as a preventive measure had been concealed for fear of encouraging unsafe sex.

a. + sex >>共 683
opposite 5.58%
unprotected 5.21%
consensual 3.51%
convicted 3.25%
premarital 3.15%
same 3.08%
illegal 2.95%
former 2.82%
unsafe 1.74%
gay 1.67%
unsafe + n. >>共 138
sex 10.82%
condition 10.20%
product 5.51%
abortion 5.31%
level 4.49%
practice 4.08%
mine 2.24%
truck 2.04%
area 2.04%
speed 1.84%
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