In 1997 and 1998 a short segment of Gladiators was introduced to the Royal Tournament event at Earls Court after London Weekend Television won the broadcasting rights from the BBC. Duel would feature in the 1997 Royal Tournament and Pursuit featured in the 1998 Royal Tournament despite it having been axed after the 1996 series. For its Royal Tournament appearance, Pursuit saw a ten second headstart (rather than three) for the contenders with the course being a sprint round a cone, web trap (over), low wall, web trap (under), hand ladder, high wall, sprint round a cone, spaghetti junction (used in the Eliminator in 1996) and sprint finish. The balance beam and wire bridge from the televised series course were not used. Fox, Rocket, Khan and Hunter took part in the shows despite Rocket and Khan not appearing in the 1998 series and the Gladiators (except Hunter) not having had chance to play Pursuit in the televised series.
Gutworms and similar parasites are present in untreated drinking water in developing countries, and were present in the water of developed countries until the routine chlorination and purification of drinking water supplies.  Recent research has shown that some common parasites , such as intestinal worms (., hookworms ), secrete chemicals into the gut wall (and, hence, the bloodstream) that suppress the immune system and prevent the body from attacking the parasite.  This gives rise to a new slant on the hygiene hypothesis theory—that co-evolution of humans and parasites has led to an immune system that functions correctly only in the presence of the parasites. Without them, the immune system becomes unbalanced and oversensitive.  In particular, research suggests that allergies may coincide with the delayed establishment of gut flora in infants .  However, the research to support this theory is conflicting, with some studies performed in China and Ethiopia showing an increase in allergy in people infected with intestinal worms.  Clinical trials have been initiated to test the effectiveness of certain worms in treating some allergies.  It may be that the term 'parasite' could turn out to be inappropriate, and in fact a hitherto unsuspected symbiosis is at work.  For more information on this topic, see Helminthic therapy .