SINGAPORE – When Japanese tourist Ken Soujiro, 39, and his family woke up on Saturday morning (Sept 14), they were looking forward to their trip to the Mandai Zoo and River Safari.

But Mr Soujiro’s plans for his family on the fourth day of their visit to Singapore went awry after his four-year-old son Shouto started wheezing, coughing, and panting heavily midway through their walk around the zoo.

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