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CDC: 2 Million in U.S. Have Chlamydia

Rates Highest Among African-Americans, Teens

Screening for Chlamydia and Gonorrhea

CDC currently recommends annual chlamydia screenings for all sexually active women under the age of 26, and annual screenings for older women with risk factors for the STD, such as a new sex partner or multiple partners. Screening is also recommended for all pregnant women.

Routine screening for gonorrhea is also recommended for women with a high risk for infection, such as sex workers and women with new or multiple sex partners.

The findings suggest that current chlamydia and gonorrhea screening recommendations are adequate, assuming they are implemented, Datta says.

"If screening recommendations are properly applied they will be effective, but we know that this isn't happening consistently," she says. "This needs to be a focus of STD prevention."

The prevalence analysis appears in Tuesday's issue of the Annals of Internal Medicine.

Penicillin-Resistant Gonorrhea Down

In a separate study, published in the same issue of the journal, another group of CDC researchers reported that the prevalence of penicillin-resistant gonorrhea appears to be declining, while resistance to antibiotics in the class known as fluoroquinolones is on the rise.

In April of this year the CDC recommended that fluoroquinolones no longer be used to treat the infection because of rising resistance among both heterosexual and gay men.

Now only one class of antibiotics -- cephalosporins -- is recommended for the treatment of gonorrhea.

In a press release, CDC officials noted that the declining treatment options underscored the need for new drugs to treat the infection and for better ways to monitor drug resistance.

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