Michael V said:

SCIENCE said:

More than one third of babies thought to have a peanut allergy may actually be able to safely eat nuts, according to a new study. Researchers found 35 per cent of infants with a previous reaction to peanut and a positive allergy test did not react to an oral food challenge. NACE Director Kirsten Perrett said the number of children who did not react to peanut during a supervised food challenge was “surprising”. Melbourne School of Public Health biostatistics professor Lyle Gurrin, who was not involved in the research, said he was not surprised that the figure reported in the research was so high. “A lot of people think their children are allergic when they’re probably not, so I think this paper is good from that point of view that it’s encouraging people to seek proper advice,” he said.

going to put it out there that after recent infection the immune system will react to new things and as often as not it will then settle down with time

Interesting notion.

How would one go about testing it, I wonder.

they do say

The study involved 1,275 infants under 18 months of age at hospitals in Victoria, New South Wales, Queensland, South Australia and Western Australia. The program exposed children to small, daily doses of peanut to build tolerance.

Professor Perrett advised parents not to conduct an oral food challenge at home, warning that 12 per cent of infants with a peanut allergy had a potentially-life threatening anaphylactic response. He said oral food challenges still need to be carried out under appropriate conditions. “You can’t really do that in a GP surgery or a child maternal health clinic,” he said. “You need all the material and the broader understanding to be able to assist the child who is having a reaction, whether it be mild or right through to anaphylaxis.”