The medical evidence
13 His Honour dealt with the medical evidence in a somewhat cryptic fashion. Nevertheless, when the evidence is read as a whole, it supports his Honour's findings. The appellant is critical of the way in which the judge dealt with the evidence of Professor Pirola, Dr Aroney and Dr Hudson.
14 The effect of Professor Pirola's evidence was to exclude campylobacter bacteria since it was probably not present until a separate incident involving a pizza in October 1996. Second, if the appellant had no problem for 20 months, this would tell against the diagnosis of irritable bowel syndrome secondary to the flight incident.
15 In this respect, it does not appear that the appellant consulted anyone about such a problem between late September 1994 (after he had returned to Australia) and July 1996 when he saw Dr Aroney.
16 Professor Pirola, however, mentioned that the appellant had told him of two similar episodes in November 1995. This was part of the reason for him thinking that the appellant was suffering an irritable bowel syndrome at the time of the flight. However, there was no corroboration whatsoever for the history given by the appellant to the Professor of his experiencing incidents in November 1995. Given the appellant's lack of credibility, this reinforces the opinion of the Professor that experiencing no problems for 20 months is contrary to a diagnosis of irritable bowel syndrome.
17 Two other aspects of Professor Pirola's evidence may be noted. First, the appellant gave him no history of any problem prior to the August 1994 plane incident. Yet it is clear that the appellant was diagnosed two years before (1992) with what was thought to be an acute episode of gastroenteritis. The Professor conceded that it was possible that this episode caused the development of an irritable bowel syndrome. He also said that 70% of people who develop the syndrome do so without any recognisable incident.
18 On balance, the evidence of Professor Pirola provides little support for the appellant's case.
19 The appellant submits that the trial judge erred in the way he summarised the opinion of Dr Aroney. His Honour had said that the doctor did not comment as to the responsibility of yoghurt other than to say that it was a possibility. The key portion of his report dated 20 December 1996 (relied on by appellant's counsel) is as follows:
Basically, the patient was confirmed recently to be suffering from "campylobacter jejuni" infection. His symptoms began from the plane trip of 1994. If (as I presume) this can be proven, then it is reasonable to say the campylobacter started then. This germ is transmitted through infected foods, such as yoghurt.
20 It may be seen that the premise for Dr Aroney's opinion is that the appellant's symptoms began on the plane trip in 1994. Moreover, Dr Aroney says that in that event, it is reasonable to say that the campylobacter started then. However, this is quite contrary to the other specialist medical evidence, including Professor Pirola and Dr Hudson. Both of them say that the appellant probably did not contract campylobacter bacteria on the plane in August 1994. Given the 1992 incident, also apparently not mentioned by the appellant to Dr Aroney, there can be no certainty that the appellant's symptoms began on the plane in August 1994.
21 Dr Hudson is another medical practitioner who the appellant says his Honour misquoted. Of his evidence his Honour said that Dr Hudson said that it was just as likely that the appellant could get sick from eating something before he left home.
22 Like Professor Pirola, Dr Hudson was also not given a history of the June 1992 episode, which was thought to be gastroenteritis. Dr Hudson said that the onset of illness from the bacteria campylobacter jejuni was usually between one and seven days after consumption of contaminated food. Since the appellant's onset of illness was within 10 minutes of consumption of the yoghurt, it was unlikely to have contracted campylobacter from the yoghurt. He could have had campylobacter prior to boarding the flight. However, the appellant's account of what happened on the plane was more likely to be a toxin related gastroenteritis. This could also have been acquired before the appellant boarded the plane. Gastroenteritis had a much shorter incubation period than campylobacter. The October 1996 diagnosis of campylobacter also made it more likely that the disorder was contracted at that time and involved the eating of pizza. Prior to this time, it was more likely that the appellant had an underlying gastrointestinal problem aggravated each time he got gastroenteritis.
23 In cross-examination the doctor said:
… the natural history really with campylobacter would have been that it had disappeared generally inside a couple of weeks or months and shouldn't really have been present in October 1996 from the illness that he got on the Alitalia flight
24 Dr Hudson also said that toxin related illnesses are generally short lived but the irritable bowel symptoms could last longer than a day or two.
25 Overall Dr Hudson was inclined to conclude that the appellant had an irritable bowel like syndrome.
26 In re-examination by the appellant's counsel at the trial, Dr Hudson was asked whether it was more probable that the appellant's symptoms were 'subsequent to the incident on the aircraft'. The question makes no real sense unless one reads 'subsequent to' as 'consequent upon'. Examining the transcript it looks like that was what the question was and certainly how it was interpreted by Dr Hudson, because he answered, 'I don't think I've been given enough information to determine that'.
27 When Dr Hudson's evidence is read as a whole, his Honour's brief summary is not inaccurate. But more important is the fact that Dr Hudson's evidence provides little assistance to the appellant in providing any link between eating the yoghurt and the appellant's illness on the flight.