Special attention is being paid to travellers from the Lion City Measures have been stepped up to ensure travellers arriving in Hong Kong from Singapore are Sars-free. Apart from routine procedures such as temperature checks, officers from the Health Department and the Airport Authority are paying special attention to all travellers from Singapore. They are checking travellers' health declaration forms before they go through immigration, ensuring that nobody is infected with respiratory diseases. They are also handing out health alert cards. Cathay Pacific and Singapore Airlines each had 10 flights to and from Singapore yesterday and China Airlines two. Travellers leaving for the city state said they were not particularly worried. Frenchman Jean Guion, who left to visit friends there, said he believed it was only an isolated case. 'I trust the Singaporean government. There are enough precautions. I went to China before and it was more terrible. I know this is now under control,' he said. Singaporean Elsie Lim, who travels frequently between Singapore and China, said she heard about the case only when she arrived at the Singapore Airlines check-in counter. 'I always thought that Sars might come back. There is no cure yet. I am based in China but I need to travel frequently to Singapore. It is quite worrying because people travel a lot and Sars is highly contagious. 'It's very bad for Singapore if it comes back,' she said. Passengers arriving in Hong Kong yesterday said they had their temperatures checked at Singapore airport. 'We didn't have to wear a mask. All we needed to do was to fill out a health declaration form,' said Singaporean Wong Lai Chun, who arrived to see friends in Hong Kong. A Singapore Airlines spokesman in Hong Kong said the company would hold discussions with Singapore's Ministry of Health to see if it needed to reintroduce measures used during the outbreak. 'We don't distribute masks on planes. But we will see if we need to reintroduce our measures against Sars.' No passengers had cancelled their flights, he said.