There's no guarantee the child will remain healthy, although sophisticated testing uncovered just traces of the virus' genetic material still lingering. If so, it would mark only the world's second reported cure.
Specialists say Sunday's announcement, at a major AIDS meeting in Atlanta, offers promising clues for efforts to eliminate HIV infection in children, especially in AIDS-plagued African countries where too many babies are born with the virus.
"You could call this about as close to a cure, if not a cure, that we've seen," Dr. Anthony Fauci of the National Institutes of Health, who is familiar with the findings, told The Associated Press.
A doctor gave this baby faster and stronger treatment than is usual, starting a three-drug infusion within 30 hours of birth. That was before tests confirmed the infant was infected and not just at risk from a mother whose HIV wasn't diagnosed until she was in labor.
"I just felt like this baby was at higher-than-normal risk, and deserved our best shot," Dr. Hannah Gay, a pediatric HIV specialist at the University of Mississippi, said in an interview.
That fast action apparently knocked out HIV in the baby's blood before it could form hideouts in the body. Those so-called reservoirs of dormant cells usually rapidly reinfect anyone who stops medication, said Dr. Deborah Persaud of Johns Hopkins Children's Center. She led the investigation that deemed the child "functionally cured," meaning in long-term remission even if all traces of the virus haven't been completely eradicated.
Next, Persaud's team is planning a study to try to prove that, with more aggressive treatment of other high-risk babies. "Maybe we'll be able to block this reservoir seeding," Persaud said.
No one should stop anti-AIDS drugs as a result of this case, Fauci cautioned.
But "it opens up a lot of doors" to research if other children can be helped, he said. "It makes perfect sense what happened."
Better than treatment is to prevent babies from being born with HIV in the first place.
About 300,000 children were born with HIV in 2011, mostly in poor countries where only about 60 percent of infected pregnant women get treatment that can keep them from passing the virus to their babies. In the U.S., such births are very rare because HIV testing and treatment long have been part of prenatal care.
"We can't promise to cure babies who are infected. We can promise to prevent the vast majority of transmissions if the moms are tested during every pregnancy," Gay stressed.
The only other person considered cured of the AIDS virus underwent a very different and risky kind of treatment — a bone marrow transplant from a special donor, one of the rare people who is naturally resistant to HIV. Timothy Ray Brown of San Francisco has not needed HIV medications in the five years since that transplant.
The Mississippi case shows "there may be different cures for different populations of HIV-infected people," said Dr. Rowena Johnston of amFAR, the Foundation for AIDS Research. That group funded Persaud's team to explore possible cases of pediatric cures.
It also suggests that scientists should look back at other children who've been treated since shortly after birth, including some reports of possible cures in the late 1990s that were dismissed at the time, said Dr. Steven Deeks of the University of California, San Francisco, who also has seen the findings.
"This will likely inspire the field, make people more optimistic that this is possible," he said.
In the Mississippi case, the mother had had no prenatal care when she came to a rural emergency room in advanced labor. A rapid test detected HIV. In such cases, doctors typically give the newborn low-dose medication in hopes of preventing HIV from taking root. But the small hospital didn't have the proper liquid kind, and sent the infant to Gay's medical center. She gave the baby higher treatment-level doses.
The child responded well through age 18 months, when the family temporarily quit returning and stopped treatment, researchers said. When they returned several months later, remarkably, Gay's standard tests detected no virus in the child's blood.
Ten months after treatment stopped, a battery of super-sensitive tests at half a dozen laboratories found no sign of the virus' return. There were only some remnants of genetic material that don't appear able to replicate, Persaud said.
In Mississippi, Gay gives the child a check-up every few months: "I just check for the virus and keep praying that it stays gone."
The mother's HIV is being controlled with medication and she is "quite excited for her child," Gay added.
New menu items ready for the Lenten season
The Cane Fire Film Series screens “MaidenTrip” on Monday, March 10, at the AcA.
Acadiana's nightlife guide.
The vibe of the tribe done modern
The Louisiana Workforce Commission said Friday that initial claims rose to 2,125 from the previous week's total of 1,964. There were 2,887 initial claims during the comparable week in 2013.
The Board of Elementary and Secondary Education has stalled action on a $3.5 billion annual school funding formula due to state lawmakers by March 15.
The New Orleans Saints have yet to make it official as of this writing, but popular wide receiver Lance Moore has reportedly been cut by the team to free up salary-cap space on the roster.
While two medical marijuana bills are slated for the upcoming legislative session, what some Louisianans might not know is that the plant was approved for therapeutic use by state lawmakers in 1991.
The agenda is shaping up to be lighter than in previous years. But Jindal is term-limited, with fewer than two years remaining in office, and he saw his last big initiative — a proposed rewrite of Louisiana tax law — collapse without getting a vote in 2013.
Sharper has been held without bail because of an arrest warrant issued by Louisiana authorities accusing him and another man of raping two women.
Here's your daily look at late-breaking national and international news, upcoming events and the stories that will be talked about Friday, March 07, 2014:
Two Lafayette men have been revealed by police as the infamous duo behind a caper that shook our fair city to its core.
She’s the daughter of the legendary Johnny Cash, but she’s been a gifted artist in her own right for three decades, and she’s coming to Lafayette.
The Lafayette Parish School Board has received a second letter of demand related to last year’s insurance debacle, this time from Key Benefit Administrators claiming it’s owed $93,000 from the school system.
Acadiana's nightlife guide.
The Louisiana coastline is vanishing faster than mappers can keep track.
A bill that would have overridden local ordinances prohibiting public and private employers from discriminating against lesbian, gay and transgender people has been pulled within less than a week of being filed.
The panel that selects nominees for a controversial New Orleans area flood control board — a board that is suing more than 90 oil, gas and pipeline companies — is set to discuss legislation affecting its independence.
State prison officials cannot keep secret the seller and manufacturer of the two drugs purchased for executions at the Louisiana State Penitentiary, a federal judge ruled Wednesday.
State lawmakers will not appeal a judge's ruling that it was improper to use $3.7 million from a probation and parole officers' retirement fund to balance the state's operating budget.
Prepare yourselves for sun
Acadiana's nightlife guide.
Conservatives have been losing their minds over this satirical bit on the Colbert Report.
Due to the chaos of Mardi Gras and the weather, the entry deadline for this year's INDesign Awards has been extended by one week.
The Lafayette Parish School Board leaves a lot to be desired, but is scrapping the election process in favor of an appointed board the answer?
Queen Evangline and King Gabriel ruled Tuesday night
The House approved legislation Tuesday night to roll back a recently enacted overhaul of the federal flood insurance program, after homeowners in flood-prone areas complained about sharp premium increases.
IND Style does Gabriel
Newsy bits for the fam
The NFL has formally designated New Orleans' Jimmy Graham as a tight end for the purposes of his franchise tag value, which is now set at $7.05 million next season unless Graham and the Saints subsequently agree on a long-term deal.