Health officials reported in the vicinity of a decline of 30% visited young children, the doctor for infections of the ear of 15 years and some researchers suggest that against the decline in part to a reduction in the parents smoking.
Why the numbers are in decline, is something of a mystery, but researchers think Harvard University to stop, which means less irritation of the respiratory system for children can contribute to a reduction in the number of parents. Many doctors thanks to the increasing use of a vaccine against the bacteria, ear infections. Others believe that increased breastfeeding is to protect of the children.
Specialist Dr. Richard Rosenfeld, an ear, nose and throat form New York for the American Academy of Pediatrics, said: "we are kind of guessing here."
Although it was brought the most common cause of parents once their children to a doctor, that centers for disease control and prevention do not have the ear infections published a report on in almost 20 years.
From 1975 to 1990 visit rates for children under 6 years of age more than doubled for infections of the ear. One of the main reasons, according to Rosenfeld, was a constant increase in dual career families. More families to their children in child care and child care is a breeding ground for microbes that can cause infections of the ear.
But, a Harvard University study suggested that cigarette smoke of another contributor might be.
Most infections of the ear occur after a cold start
. In children, it is directly connected to the ear on the back of the nose. If infections in the nose and throat of the child can easily cause inflammation of the ear, which then can lead to infections.
If a child inhales cigarette smoke through the nose, said it can cause the same degree of irritation and swelling in the ear, Dr. Gordon Hughes of the National Institute of deafness and other communication disorders.
The CDC figures show, the exposure to second-hand smoke from 88% in 1990 to 40 per cent in 2007-2008 decreased.
Harvard research indicates that corresponds to the decrease to a drop in the cases of infection of the ear in children.
"" If people smoke less to their children, if are houses without smoke, can the infections of the ear and fallen, "said Hillel Alpert, making author of study published recently by the journal tobacco control, associated press" "."
The number of doctor visits, in which the primary diagnosis was ear infection fell by 30% from 1993 to 2008 children of 6 and sub - of about 17.5 million to 12.5 million. The visits for ear infections fell by 32%, from 636 visits per 1,000 children of 431 per 1,000.
The downward trend, however, seemed on from in recent years.
Some doctors said that she noticed that the ear infections, wait less in her years. "We don't see it that much more," said Dr. Michael Baron, a GP practice in stone mountain, a suburb of Atlanta.
A vaccine against the strep bacteria could be another factor in the decline of infections of the ear in children. The vaccine was approved for the first time in the year 2000 and explain not the case in the 1990s according to some experts, however probably contributed to the decline.
Some studies have credited also antibody-rich breast milk to reduce the risk of babies for respiratory infections, ear and the middle. Nursing mothers were now on the slopes with 77% compared to less than two-thirds of the early 1990s.
But for some of these theories seem unfounded.
In which Willis budget in Charlotte, NC, none of the two parents smoke, the two children all recommended vaccines and the parent babies had with each child for about three months.
Her son two and a half years, which received 6 Hatcher 10 infections of the ear in a year, when he was young, and their 21-month-old daughter Libby Jeanne, had four.
Jessica Hyatt, an old mother 21 years in Spokane (Washington), whose Haus without smoke, said his 2-year-old daughter, Çeşme had four of ear infections, with close to two months.