PHW investigations continue into Cowbridge farm sickness bug

Public Health Wales are investigating a number of cases of Cryptosporidium infection in people who attended calf and lamb feeding and petting sessions at Cowbridge Farm Shop

Cryptosporidium is a parasite that can cause gastrointestinal illness. It is often linked to contact with animals, particularly young farm animals such as calves and lambs.
Author: George SymondsPublished 30th Apr 2025
Last updated 30th Apr 2025

Public Health Wales, Cardiff and Vale University Health Board, Vale of Glamorgan Council and Shared Regulatory Services are investigating a number of cases of Cryptosporidium infection in people who attended calf and lamb feeding and petting sessions at Cowbridge Farm Shop, Marlborough Grange Farm, Cross Ways, Cowbridge CF71 7LJ.

There are 28 cases currently associated with this incident.

As a result of this incident, Cowbridge Farm Shop have voluntarily brought these activities to a close and are cooperating with our investigations.

Cryptosporidium is a parasite that can cause gastrointestinal illness. It is often linked to contact with animals, particularly young farm animals such as calves and lambs.

Su Mably, Consultant in Health Protection at Public Health Wales said:

“We are working closely with partners to investigate these cases and to understand if there is a wider risk to the public. We would advise anyone who has visited the farm, particularly those who attended feeding or petting sessions, and who is now experiencing symptoms to contact their GP.

The main symptoms of cryptosporidium infection include:

  • Watery diarrhoea
  • Stomach pains or cramps
  • Nausea or vomiting
  • Loss of appetite and weight loss
  • Mild fever

“Symptoms typically begin between two and 10 days after contact with the parasite and can last for up to two weeks. Young children and people with weakened immune systems can be particularly vulnerable to the effects of the infection.”

Public Health Wales is reminding people to follow hygiene practices when visiting farms:

  • Always wash your hands thoroughly with soap and warm water after touching animals, after touching boots or clothing, and before eating or drinking.
  • Do not eat or drink while touching animals or walking round the farm.
  • Remove and clean footwear and wash hands after leaving the farm.
  • Supervise children closely to ensure they wash their hands properly.
  • Pregnant women should take particular care and avoid contact with newborn lambs during lambing season.

Further information about cryptosporidium and advice on infection prevention is available from the NHS 111 Wales website: