The first patient, a male infant, presented with abdominal distention and vomiting for two days at the age of four months.

• 首位四个月的男性病婴，以腹胀及持续呕吐表现，另一个九个月大男婴则以发烧一日、躁动不安，喂食后呕吐及喜作左侧躺表现。