John and Chris Philip have returned from a 10-day trip immunising children in India against polio.
Mr Philip, a retired Huddersfield cancer specialist, and his wife, a retired teacher, had travelled to India as part of a team of Rotary Club volunteers. They helped an international immunisation campaign targeting 157 million children.
The Philips led 34 Rotary volunteers, the largest ever from the UK to any humanitarian project.
John is the leader of Yorkshire Rotary this year. The team included volunteers from different parts of the country, 28 of whom were from Yorkshire.
John and his team were in Lucknow, capital of the North Eastern state of Uttar Pradesh which recently reported a surge in polio cases.
The north-east of India is one of the areas where polio is still endemic, as are parts of Pakistan, Afghanistan and Nigeria.
John said: “We walked the slums of Lucknow, stood at traffic junctions, staffed temporary ‘booths’ in street corners, knocked at doors, and assisted health staff at Lucknow to immunise countless children.
“The children came on foot, on rickshaws, on bikes and motorbikes.
“There were Muslim women in burkas and Indians in saris, queuing together, with their babies for two drops of vaccine to protect them from polio.
“We were there to boost the campaign and help local Rotarians, health workers and volunteers in their relentless battle against this scourge.”
In 2008 India reported 541 cases of polio and the government has responded by intensifying the campaign with new vaccines, administered to children each month.
There are 40 million children under five years old in Uttar Pradesh who need to be vaccinated and 50,000 more are born each year.
In 1985 the Rotary pledged to work towards eradicating polio. At the time polio was endemic in 125 countries and now it has been reduced to four.
Last month the Fixby couple spend 18 days in Tanzania finding out what needs to be done to provide clean water supply and considering how common diseases can be prevented.