After a significant decline in infant mortality in the District, the number of babies who died in the city jumped 19 percent in 2005, according to a report released by the District's chief medical examiner.

The number of deaths rose to 81, up from 68 in each of the previous two years. The increase is a reversal of a downward trend that started in 1999, when 115 deaths of children younger than 1 year old were reported.

Buy This Photo Frances Brown, with 1-year-old son Jermaine, has been attending a parenting class at THEARC. The class includes advice on how to avoid infant deaths. (Photos By Kevin Clark -- The Washington Post) Graphic A Change in a Trend Infant mortality in the District increased 19 percent in 2005, disrupting a gradual, downward trend over the past several years. The number is the highest since 2000, when 94 were reported. Save & Share Article What's This? Digg Google del.icio.us Yahoo! Reddit Facebook

More than 70 percent of the deaths in 2005 were attributed to premature births and complications such as low birth weight, according to the report by the Child Fatality Review Committee.

"Undetermined" was the second leading category with 15 deaths, about twice as many as the year before, the report said. The study found that a little more half of those deaths were linked to "inappropriate sleeping environments."

To improve infant care in the District, especially among low-income families, Parklands Community Center and the Children's Health Project health center are working in a venture in Southeast Washington that started in 2005.

Each week, Frances Brown sits in a circle with other new mothers attending a Parklands parenting class at THEARC, a community center that provides services for low-income residents east of the Anacostia River.

Instructors have shown Brown how to pick up a crying infant and put the baby to her chest to hear her heartbeat. She has learned the dangers of suffocation, such as placing blankets or stuffed animals in an infant's crib. Sharing a bed with siblings or an adult and putting infants on their stomachs to sleep also are associated with infant deaths.

The classes have helped the single mother of two cope with the demands of her year-old son, Jermaine.

"I go down to the classes and unwind and say what I have to say," said Brown, 37, who enrolled in October at the encouragement of an instructor she knew. "It's almost like a support group."

In some deaths, lack of prenatal care played a role. The 43-page report, which was released to city officials in December, found that 12 mothers did not receive prenatal care and 24 had problems with substance abuse.

Wards 7 and 8 had the highest number of infant deaths in 2005, the report said -- 13 and 25, respectively. Eight of 10 infants who died in the District were black.

"What's happening in Ward 8 is uncalled for, and Ward 5 is getting worse," with 12 deaths, said Maria Gomez, president and chief executive of Mary's Center for Maternal and Child Care in Adams Morgan. Ward 5 had 10 infant deaths in 2004.