MANILA, Philippines ? (UPDATE) The suspension of classes due to the threat of an Influenza A (H1N1) outbreak will be done on a case to case basis, according to the Department of Health, which issued guidelines on Saturday to help education officials and school administrators decide when to suspend classes.

?At this time, there is no compelling reason to suspend the opening of classes on Monday, June 1,? Health Secretary Francisco Duque III announced after a conference among the DOH, the Department of Education and the Commission on Higher Education at the St. Luke's Medical Center in Quezon City.

Meanwhile, two more persons tested positive for the H1N1 virus, bringing to 16 the number of confirmed swine flu cases in the country. The latest cases were a 51-year-old man and his 21-year-old son who arrived from the United States last May 26.

They manifested ?very mild flu symptoms? of cough and fever on May 28, according to the DOH.

?We only have 16 confirmed cases so far and they are all confined in health facilities. Three have been discharged and have fully recovered. There is no sustained community level transmission of H1N1 anywhere in the country,? Duque stressed.

Three of the 16 confirmed cases have fully recovered and have been discharged, Duque said.

Under the guidelines contained in School Response Level System, school administrators may suspend classes in their school if there is one or more confirmed case among their students, faculty or school personnel.

When the DOH assesses that there is community transmission, the DepEd and CHED may announce the closure of one or more schools in the affected area.

Students and school personnel who have flu-like symptoms such as fever, colds, cough or sore throat should not report to school but should inform school officials.

While in school, those who are identified to have influenza-like symptoms should be isolated in a designated room before they are sent home.

Duque said students who come from vacations in affected countries should observe self-quarantine for 10 days, or at least 24 to 48 hours after they have recovered from flu-like symptoms.

?We call on school [authorities] to give these students special consideration and help them catch up with their missed lessons,? he said.

The guidelines were signed by Duque, Education Undersecretary Ramon Bacani and CHED Executive Director Julito Vitriolo.

They said they would immediately distribute the guidelines.

?This is unprecedented. We're the only country to have this . We're very proud to come together to formulate the response level system,? Duque said.