Advocates in Hong Kong are concerned about a lack of adequate sex education in the city’s schools, China Daily reports. A recent study of young people in the city shows that nearly half of respondents incorrectly believed Vaseline was a suitable lubricant for condoms. A 2009 study of young people in the city shows that half of respondents did not use any form of protection the first time they had sex. The city’s education bureau has a sex ed curriculum, but schools aren’t required to use it.

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