UCL Great Ormond Street Institute of Child Health


Great Ormond Street Institute of Child Health



PICNIC stands for Air Pollution, housing and respiratory tract Infections in Children: National Birth Cohort Study

Welcome to the PICNIC study website!

PICNIC Study logo
We will use large health databases linked to environmental and Census data to look at whether children exposed to outdoor air pollution or poor housing conditions (like overcrowding, damp or high levels of indoor air pollution) during pregnancy or early childhood can increase the risk of respiratory tract infections like bronchiolitis, pneumonia and croup.


Please look around the website to learn more about the study. We will also publish our results here, under Results and publications.

Parents and child in urban setting


Information about the study team and how the study is funded

Child splashing in puddle

Study summary

Read about why we are doing this study, and our methods

Child playing hopscotch

Results & publications

Here you can find our results and any publications from PICNIC

picnic's aims on youtube

Hear about PICNIC's aims

Hear more about PICNIC from its Principal Investigator 

Recent news

PICNIC at the Play Street, 22nd September 2023

PICNIC Study at Play Street 2023
Members of the PICNIC team attended to 2023 Great Ormond Street Play Street to showcase health research into our local environments for World Car Free Day. We had lots of fun sharing stickers, seed packets and learning about children and parents’ research priorities. The question, “How does living near parks, fields or other green spaces impact young people’s health?” won the most votes.”



The PICNIC study is presented to the public at the Bloomsbury Festival, 20th October 2022

PICNIC Study at the Bloomsbury Festival

The Bloomsbury Festival 2022’s theme was Breathe. Bloomsbury is internationally known for its garden squares, but as an inner-city area it is bordered by one of the city's most polluted roads.  Samantha Hajna and Pia Hardelid presented the PICNIC study to the public at Senate House, also understanding the local environmental priorities of those attending.

The PICNIC study is funded by the Medical Research Council