No melamine has been found in Wyeth formula milk powder which has reportedly caused kidney illness on 20 children, said China's quality supervisor on Thursday.

The General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) said it checked every batch of powder produced and imported by Wyeth from September 14 till now and no melamine was detected.

The newspaper Nanfang Daily reported this Monday parents of 20 Chinese infants alleged that their children suffered kidney disorders after drinking Wyeth milk powder.

However, Wyeth refuted the report, saying that there were no medical reports or other evidence supporting claims that the 20 infants were sickened by Wyeth milk powder.

Melamine-adulterated milk powder killed at least six Chinese infants and sickened almost 300,000. More than 300 children were still in the hospital at the end of December, according to the Ministry of Health.

Two people have been sentenced to death for their roles in the contamination, while the ex-chairwoman of Sanlu Group, which was at the heart of the scandal, was jailed for life.

(Xinhua News Agency February 27, 2009)