Data for: Gut microbiota markers in early childhood are linked to farm living, pets in household and allergy

The dataset includes variables on: Host factors and early life exposures: sex, parental allergy, farm residence, pet ownership, and breastfeeding Gut microbiota development: presence and population counts of selected bacterial groups at 9 timepoints between 3 days and 18 months of age.

These data were obtained using quantitative bacterial culture of fecal samples, targeting key facultative and anaerobic bacteria of the infant gut (exception: samples obtained at 3 days of age were not cultured quantitatively and targeted facultative bacteria only). Allergy at 3 and 8 years of age: clinical diagnosis of allergy (eczema, food allergy, allergic rhinoconjunctivitis or asthma)