Statistics

This article describes a study in which data were analyzed from the 2007 Youth Risk Behavior Survey (YRBS) to determine the extent to which adolescents are being tested for HIV. Results indicated that nationwide, 12.9 percent of all high school students had ever been tested for HIV. Testing increased with increasing grade level and decreased with increasing age at first sexual intercourse.

This report presents data on persons infected with HIV in Guangdong Province in Southeastern China. A case-based surveillance system (CBSS) was used to collect data on persons infected with HIV, including demographic characteristics and transmission categories. With assistance from the Centers for Disease Control and Prevention (CDC), the Guangdong Center for Disease Control analyzed the CBSS data for the period 1997-2007. Results indicate that the number of HIV cases increased from 102 in 1997 to 4,593 in 2007.

This report complements the 2009 HIV Surveillance Report by presenting additional data on persons 13-24 years old from the 45 areas (40 states and 5 US dependent areas) with confidential name-based HIV infection reporting since at least January 2006. It also includes the statistics reported to the CDC through 2009.

This report presents statistics and trends for sexually transmitted diseases (STDs) in the United States through 2008. The information is based on (1) notifiable disease reporting from state and local STD programs; (2) projects that monitor STD prevalence in various settings, including the Regional Infertility Prevention Projects (IPP), the National Job Training Program, the Indian Health Service, the Men Who Have Sex with Men (MSM) Prevalence Monitoring Project, and the Gonococcal Isolate Surveillance Project (GISP); and (3) national surveys by federal and private organizations.

This report presents data on the impact of chlamydia, gonorrhea, syphilis, and genital herpes on 10-19 year olds in Arizona for 2009. The data were derived from the Arizona Department of Health Services STD Surveillance Database. The data are presented by race/ethnicity, county, and gender for each disease. It includes certain populations such as young adults in juvenile detention facilities. It is noted that chlamydia, gonorrhea, and herpes are more frequently diagnosed in young females than in young males.

This report summarizes CDC’s National HIV Behavioral Surveillance System (NHBS) data collected in 2008 from 21 metropolitan statistical areas (MSAs) using an anonymous cross-sectional interview of men at venues where men who have sex with men (MSM) congregate. The data show that of 8,153 MSM interviewed and tested in the 21 MSAs participating in NHBS in 2008, HIV prevalence was 19 percent, with non-Hispanic blacks having the highest prevalence (28 percent), followed by Hispanics (18 percent), non-Hispanic whites (16 percent), and persons who were multiracial or of other race (17 percent).

This report summarizes the results of a CDC analysis of recent trends in congenital syphilis (CS) rates, using national surveillance data from the years 2003-2008. Results show that after declining for 14 years, the CS rate among infants aged <1 year increased 23 percent, from 8.2 cases per 100,000 live births in 2005 to 10.1 during 2008. The increase followed a 38 percent increase in primary and secondary syphilis rate among females aged =10 years from 2004-2007.

The Centers for Disease Control and Prevention (CDC) analyzed serologic test results from persons aged 14-49 years who participated in the National Health and Nutrition Examination Survey (NHANES) 2005-2008, to determine whether HSV-2 seroprevalence in the United States has changed since 1999-2004. CDC also used the data to estimate HSV-2 seroprevalence by age, race/ethnicity, and reported lifetime number of sex partners. Results indicated that HSV-2 seroprevalence was 16.2 percent overall, not statistically different from that of 1999-2004, and was highest among women and non-Hispanic blacks.

This report describes the most recent trends in diagnoses of perinatal HIV infection by race/ethnicity, by summarizing results of analyses of national surveillance data from 34 states from 2004-2007. During 2004-2007, 85 percent of diagnoses of perinatal HIV were in blacks or African Americans (69 percent) or Hispanics or Latinos (16 percent). The average annual rate of diagnoses of perinatal HIV during that time was 12.3 per 100,000 among blacks, 2.1 per 100,000 among Hispanics, and 0.5 per 100,000 among whites.

This report present statistics and trends for sexually transmitted diseases (STDs) in the United States through 2009. The information is based on (1) data from notifiable disease reporting from state and local STD programs; (2) projects that monitor STD prevalence in various settings, including Regional Infertility Prevention projects, the National Job Training Program, the Indian Health Service, the STD Surveillance Network, and the Gonococcal Isolate Surveillance Project; and (3) National surveys implemented by federal and private organizations.