The flu season has arrived with more than just sniffles and coughs. Across the Philippines, cases of influenza-like illness (ILI) are quietly climbing, prompting schools to suspend face-to-face classes and communities to heighten precautions. What many still dismiss as a ‘simple flu’ is, according to health experts, a public health concern that demands greater awareness and vigilance.
Recent reports show a steady increase in ILI cases across several regions, with classrooms, offices, and households feeling the impact. Some schools have declared ‘health breaks’ to curb transmission, an action that coincided with the conduct of classroom and building inspections in light of recent earthquakes. But the primary concern, experts say, remains the surge in respiratory infections.
‘It’s not something we should take lightly,’ warned Dr. Rontgene Solante, past president of the Philippine College of Physicians (PCP) and an infectious disease expert. ‘When multiple viruses are circulating, especially influenza, respiratory syncytial virus (RSV), and Covid-19, even mild symptoms can spread quickly and cause complications among children and older adults.’
The reminder came during a recent health forum, ‘Fighting Flu Together, Protecting Us All,’ organized by the PCP, where the issue of the recent rise in ILI and the importance of prevention was discussed.
Not Just ‘the Flu’
INFLUENZA-like illness isn’t a single disease but a syndrome or a group of symptoms including fever, cough, and fatigue that can last up to 10 days. While influenza A and B viruses are common culprits, other pathogens such as rhinovirus, (RSV), enterovirus, and even Covid-19 can cause similar symptoms.
Dr. Solante emphasized that ‘flu-like’ doesn’t mean ‘harmless.’ ‘We tend to dismiss fever and cough as ordinary, but when several viruses are co-circulating, even a mild infection can spread rapidly and cause serious complications,’ he said.
Data from the Department of Health (DOH) showed that ILI cases typically rise from September to January, months marked by cooler temperatures and increased indoor crowding. As of September 27, 2025, the DOH reported 121,716 ILI cases nationwide. While lower than last year’s 132,538, health officials warn that complacency could easily reverse that trend.
Regions 1, 2, Cavite, Laguna, Batangas, Rizal, Quezon (CALABARZON), Mindoro, Marinduque, Romblon, Palawan (MIMAROPA), and Region 5 have recorded the sharpest increases, with children aged five to 14 years old most affected. The elderly, meanwhile, face heightened risks of pneumonia and cardiovascular complications.
Vaccination: the best line of defense
VACCINATION remains the most effective shield against severe respiratory illnesses. Dr. Solante underscored the need for timely immunization, advising Filipinos six months and older to get their annual flu shots, preferably by March or April, before infections rise later in the year. The trivalent influenza vaccine, which protects against the H1N1, H3N2, and B Victoria strains, is recommended for most individuals.
Meanwhile, seniors, immunocompromised patients, and those with underlying health conditions are encouraged to get additional protection through pneumococcal and respiratory syncytial virus (RSV) vaccines to help prevent hospitalization and serious complications.
‘Vaccination is not just an individual decision but a community responsibility. When more people are protected, we interrupt transmission and protect those who can’t be vaccinated.’
Public health measures that became second nature during the pandemic like mask-wearing in crowded spaces, frequent handwashing, and surface disinfection, remain effective tools against respiratory infections. Experts also cautioned against self-medicating with antibiotics, which don’t work against viruses and can contribute to antimicrobial resistance.
Instead, early consultation with healthcare providers ensures proper care and prevents complications.
A call for shared responsibility
THE PCP forum underscored that fighting ILI requires both science and solidarity. While case numbers are currently below epidemic levels, experts stressed that public cooperation through vaccination, hygiene, and responsible health behavior will determine whether those numbers stay manageable.
Dr. Nemencio Nicodemus, Jr., President of the Philippine College of Physicians, pointed out that the goal of the forum is simple: to give clear, correct, and practical information so families and communities can be protected.
‘The PCP wants to answer the questions, correct the misconceptions, and share best information to avoid getting sick. The PCP will also continue to push for discussions on health that is important to the public. It is about working together to prevent diseases, and to keep our children safe and healthy,’ he said.
In a statement, the PCP said that ILI is manageable when communities use layered, simple measures: vaccination, masking when appropriate, hand hygiene, ventilation, prompt isolation when ill, and early medical care for those at risk. The group also expressed its readiness to support clinicians, institutions, and the public, and likewise urges everyone to contact the local DOH office for guidance, information on local vaccination sites, or to report outbreaks.
As the rainy season continues, the message remains simple but urgent: don’t shrug off that ‘simple flu.’ It may be common, but it’s never trivial. With caution, vaccination, and community effort, Filipinos can ensure this flu season passes without lasting harm.