According to the Daily Star, nearly 200 ticks have been removed from Croc Creek and surrounding areas so far, as bites would cause people's body parts to swell.
Medic Bob McCarron told the paper: "We have had a real problem with ticks this season. They have poison and we take it very seriously. I've actually got a couple of crew with very large swollen legs and arms at the moment from tick bites."
He warned that ticks like "hiding in strange places" – including boobs and bums!
Of course, the celebrities and crew will have known bugs and other critters were a high possibility given they're filming in the middle of a sweltering hot jungle. Last year, three poisonous rough-scaled snakes and two killer funnel-web spiders have already been discovered within close proximity to the celebrities. Stars also face mosquito bites and dizziness.
It's estimated medics in the jungle treat around 30 cases a day including dizziness.