Downstream

which people in the third
world get from dirty water,
and it makes you very ill with
diarrhoea. It lays eggs in the
lower intestine. I had
antibiotics before I started,
and during, and I can’t say for
certain how I got it.’ Long-
distance swimmer Frank
Chalmers also got sick with
‘the dreaded Thames lurgy’
as he approached Oxford on
his four-day swim, but
despite being taken to