The 140 cases have been confirmed HIV positive by the Pasteur Institute in Phnom Penh.
The villagers tested positive for HIV-1, the most common and pathogenic strain of the deadly virus.
Authorities say they fear the repeated use of an infected needle could be causing the devastating outbreak in northwestern Battambang province.
A local health clinic in Rokar village, Battambang province, is now under investigation, after nearly 800 people were tested for the virus.
At least 82 people have tested positive for HIV in the village of Rokar, Battambang province, which has only 2,000 people in it.
Police have recorded 93 different drug trafficking cases in the last three months.
Large number of previously unreported deaths contribute to sharp rise in global total.
The hotel is still open for regular business, but at least several floors have been reserved for potential Ebola carriers, health workers, and Chinese security officials
More than 80 percent of country's 850,000 elderly never had formal employment and therefore do not qualify for a pension.
Ambassador to UN says White House committed to reversing tide of deadly infections.
Cambodians in Washington raised more than $15,000 for the Kantha Bopha Hospital on Saturday, at an event sponsored by the Cambodian Embassy.