Although more and more classes around the country are being suspended amid the rapid spread of influenza A(H1N1) , the Central Epidemics Command Center (CECC) said Thursday that the guidelines regulating class closures will not be changed. Based on the '325' guidelines published on Aug. 18, classes at kindergartens, primary schools, and junior and senior high schools, as well as cram schools and day-care centers, must be closed for five days to prevent cluster infections if any two students in the same class are diagnosed with H1N1 within three days, the CECC said in a press release. Institutes or facilities caught failing to follow the guidelines will be subject to disciplinary action by local governments, the CECC said. According to CECC statistics, a total of 919 classes at 439 schools nationwide had been closed as of the previous day, accounting for 0.67 percent of the total. To date, there have been 454 hospitalization cases of influenza A(H1N1), or swine flu, including 27 deaths and 33 people remaining in hospital. As of Tuesday, 809 classes at 427 schools around the country had remained closed due to H1N1 infections among the students. Meanwhile, the Pin-lin Elementary School in northern Taiwan's Taipei County announced that the whole school had been shut down for five days a day earlier, making it the second school to do so on the orders of the county's education bureau following the closure of the Pin-lin Junior High School. Twenty eight of the 223 students at the Pin-lin Elementary School had been confirmed as having contracted H1N1. The increased spread of swine flu among students has led to mounting pressure on parents, many of whom are having to take time off work to take care of their children, while teachers are also facing greater pressure to conduct make-up classes on holidays. 