The article is about a study that found that babies who develop several fevers in their first year of life are less likely to develop allergies later on. The study provides support for the hygiene hypothesis, which suggests that early childhood infections help prevent allergies. The researchers examined medical records of 835 children and found that 46.6% of children with fevers in their first year developed allergies by age 7, compared to higher rates in children without fevers. Some other studies have also linked lower allergy rates to factors like growing up with pets.