Nutricia, the manufacturer of infant formula Karicare, widened its recall of two types of formula amid growing fear of contaminated whey from Fonterra's Waikato plant causing botulism.

While the milk producer said that none of milk products for infants belonging to the two batches of Karicare that Nutricia recalled on Sunday are contaminated, it is widening the precautionary recall to all batches of Karicare Stages 1 and 2 after new information about the contaminated whey ingredient came out.

"None of the products tested and sold in New Zealand indicate any contamination. However, given the extra information supplied by Fonterra late today (Monday 5th August) Nutricia has decided to instigate a further precautionary voluntary recall to cover all batches," the Nutricia statement said.

The scare caused by the possibility that their babies could be ingesting the Clostridium botulinum bacteria caused 3,000 parents to call or email Nutricia over the weekend that the manufacturer had to add 15 people to work round the clock to answer all calls and emails.

Anger is growing at the delayed response of Fonterra, New Zealand's largest company and the biggest global producer of dairy products, to admit the discovery of the contaminated material used to manufacture infant formula and sports drink.

New Zealand Prime Minister John Key, however, said that now is not the time for recrimination but action, while Fonterra Chief Executive Theo Spierings flew to China to apologise to Chinese consumers and seek a solution to the threat to the company's biggest export market.

He insisted there is no total ban on New Zealand's dairy exports to China, but only restrictions on whey protein concentrate. He is hopeful that the curbs on the entry of New Zealand products to China would be lifted this week after the recall of all the tainted products.

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