A spokeswoman for the Chinese Center for Disease Control and Prevention (CCDC) said it was not involved in the investigation in Dapu and could not comment. She directed inquiries to local health authorities in Hunan. Local health authorities declined interview requests. One official at a regional information office said she had never heard of anyone distributing milk and collecting blood test results.
SLAP IN THE FACE
Milk has a complicated history in China. In 2008, six children died and hundreds of thousands became sick after milk producers added the chemical melamine to milk powder. Six years on, parents who can afford to still buy imported infant formula, and foreign-made milk is popular in Chinese cities.
There is no evidence to suggest officials did not believe that milk was an effective treatment for excessive lead levels, but several villagers in Dapu said they thought it was just a tactic to pacify the public. "They slap you on the face, then they give you candy. That's how the government operates," said Li Wanming, a resident whose grandchildren had elevated blood lead levels.
Lead poisoning is among the most serious, if least visible, side effects of China's rapid economic growth. Exposure to lead is particularly dangerous for children: it inhibits intellectual and physical development, and can cause poor concentration, disruptive behavior, even death at high levels. Its effects are irreversible.
Local governments often organize medical tests and distribute medicine, vitamins or food in Chinese regions affected by heavy metal pollution, said Liu Jinmei, a lawyer at the Center for Legal Assistance to Pollution Victims in Beijing. Often, local officials would not disclose the results of tests they had organized for villagers, she said.
"Mainly this is to prevent the villagers from learning the truth, or to prevent them from passing this information on to people outside the village," Liu said.
In a 2011 report on lead poisoning in China, Human Rights Watch also documented how local hospitals in polluted areas withheld and, parents believe, manipulated or falsified test results.
There are no national data on lead levels in China. The Capital Institute of Pediatrics in Beijing, which conducted a survey in 15 cities between 2004 and 2008, found 7.6 percent of those surveyed had lead levels above 100 micrograms per liter (ug/L), China's threshold for safe lead exposure.
Dapu's lead problem made national headlines last month in a expose by state broadcaster CCTV, in which the mayor was shown saying children might have raised their own blood levels by chewing on pencils. After the broadcast, which claimed that more than 300 children had high lead levels, officials opened an investigation and Meilun, a local chemical plant and smelter, was forced to stop production.