The number of reported HIV/AIDS cases jumped almost 30% in the first 10 months of 2006, the Wall Street Journal reported, quoting China's Ministry of Health. It noted that intravenous drug use is the biggest source of infection. While the epidemic is continuing to grow in many parts of the country, the rise in reported cases shows China may be doing a better job of testing and tracking the disease, the newspaper reported. Half the country's drug users still share dirty needles and more than half of sex workers don't use condoms, state media reported. The ministry said the number of HIV case grew to 183,733 by October 31, up from 144,089. More than one fifth – 40,667 – have developed into AIDS cases.