chlamydia transmission The American Academy of Pediatrics has shifted its stance on infant male circumcision, announcing on Monday that new research, including studies in Africa suggesting that the procedure may protect heterosexual men against H.I.V., indicated that the health benefits outweighed the risks.

But the academy stopped short of recommending routine circumcision for all baby boys, saying the decision remains a family matter. The academy had previously taken a neutral position on circumcision.

The new policy statement, the first update of the academy's circumcision policy in over a decade, appears in the Aug. 27 issue of the journal Pediatrics. The group's guidelines greatly influence pediatric care and decisions about coverage by insurers; in the new statement, the academy also said that circumcision should be covered by insurance.

The long-delayed policy update comes as sentiment against circumcision is gaining strength in the United States and parts of Europe. Circumcision rates in the United States declined to 54.5 percent in 2009 from 62.7 percent in 1999, according to one federal estimate. Critics succeeded last year in placing a circumcision ban on the ballot in San Francisco, but a judge ruled against including the measure.

In Europe, a government ethics committee in Germany last week overruled a court decision that removing a child's foreskin was "grievous bodily harm" and therefore illegal. The country's Professional Association of Pediatricians called the ethics committee ruling "a scandal."

A provincial official in Austria has told state-run hospitals in the region to stop performing circumcisions, and the Danish authorities have commissioned a report to investigate whether medical doctors are present during religious circumcision rituals as required.

Officials with the Centers for Disease Control and Prevention in Atlanta, which for several years have been pondering circumcision recommendations of their own, have yet to weigh in and declined to comment on the academy’s new stance. Medicaid programs in several states have stopped paying for the routine circumcision of infants.

"We're not pushing everybody to circumcise their babies," Dr. Douglas S. Diekema, a member of the academy’s task force on circumcision and an author of the new policy, said in an interview. "This is not really pro-circumcision. It falls in the middle. It’s pro-choice, for lack of a better word. Really, what we’re saying is, 'This ought to be a choice that's available to parents.' ”

But opponents of circumcision say no one — not even a well-meaning parent — has the right to make the decision to remove a healthy body part from another person.