HONG KONG - Hong Kong's Department of Health Tuesday announced that 101 cases of Human Immunodeficiency Virus (HIV) infection were recorded in the second quarter of 2011 in the city.

The newly reported cases, comprising 78 males and 23 females, have brought the cumulative total of reported HIV infections to 5,036 since 1984.

Reviewing the city's Acquired Immune Deficiency Syndrome (AIDS) situation on Tuesday, the department's consultant Dr Wong Ka-hing said sexual transmission continued to be the major mode of HIV transmission in Hong Kong.

Of the 101 HIV cases reported, 34 acquired the infection via heterosexual contact, 33 via homosexual or bisexual contact, four through drug injection. The routes of transmission of the remaining 30 cases were as yet undetermined due to inadequate information.

Twenty-three new cases of AIDS were reported in the second quarter, bringing to 1,221 the total number of confirmed AIDS cases reported since 1985. Of the new AIDS cases 43 percent were related to heterosexual contact.

In this quarter, the most common AIDS-defining illness was Mycobacterium tuberculosis infection.