BEIJING (Reuters) - The toll of Chinese children ill from toxic milk formula may have nearly doubled since the Health Ministry’s last public count, local media reports show, but an official said on Wednesday the number of new cases was falling.

A child undergoes a medical check for possible kidney stones at a hospital in Hefei, Anhui province, September 21, 2008. REUTERS/Jianan Yu

Beijing is struggling with fallout from adulteration of milk with the industrial chemical melamine. At home four babies have died, and thousands of infants fell sick, while around the world products made with Chinese milk have been recalled.

The government has not updated figures issued on September 21, when it said that 12,892 infants were in hospital, 104 with serious illness, and close to 40,000 others were affected but did not need major treatment.

But reports from local media across the country compiled by Reuters suggest the number of affected children has risen to nearly 94,000, although most are not in a serious condition.

In some areas diagnoses rocketed up in the space of just a few days. In the most extreme case, northwestern Gansu province, the number of sick children climbed to 13,459 by Sept 26 from 1,695 a week earlier, the official Xinhua agency said.

Worst hit so far is central Henan province, with over 30,000 cases by the end of September. Neighboring Hebei also has nearly 16,000 cases. The province is home to Sanlu Dairy group, which made the contaminated formula that sparked the broader scandal.

Despite the rash of cases across the country -- few areas appear to have been entirely immune -- the government says it has the problem under control and recent checks have found no trace of melamine, the toxic additive, in liquid milk.

The number of sick children appearing at hospitals is also falling after news of the problem has blanketed domestic media and spread across the internet, prompting parents to take extra care about what they feed their children.

“The daily reports of infants who were diagnosed and hospitalized are decreasing noticeably, ” said Chen Junshi, a researcher from Institute of Nutrition and Food Safety of Chinese Center for Disease Control and Prevention.

But he declined to say how many had been ill overall.

“I’m not authorized to publish the number of sick infants,” he added at a news conference held by the Ministry of Health.

Even if the pace of new diagnoses is slowing, there is still room for a major leap in the total number of affected children because some of the country’s most densely populated cities and provinces, like Shanghai, have not yet disclosed any figures.

NEW STANDARDS

Public worries about tainted milk have been diluted in the past two weeks, as China was transfixed by the country’s first space walk and then enjoying the week-long National Day holiday.

But as part of an ongoing effort to restore confidence in the “made in China” brand, the government on Wednesday also released new dairy safety standards, that set limits on melamine, a cheap industrial chemical that can be used to cheat quality checks.

The limits set by the Ministry of Health’s new standards are one milligram of melamine per kilogram for infant formula, 2.5 milligrams per kilogram for liquid milk, milk powder and food products containing at least 15 percent milk.

The U.S. Food and Drug Administration said earlier this month that no amount of melamine is safe in baby formula, but China said it has set levels low enough to protect its people’s health.

“There is probably a little amount of melamine in the environment, ” Wang Xuening, deputy director of the Health Ministry’s Health Supervision Bureau, told the conference.

“So we couldn’t set zero levels, ” he said, adding that melamine content below the new limit is definitely not a threat to human health. Wang said the limits mainly aim to curb deliberate use of the chemical as an additive.

Hebei province has already arrested 27 people suspected of involvement in contaminating milk with melamine. Sanlu group’s chairwoman Tian Wenhua was also detained last month.