Seasonal influenza or the flu is one of the most common illnesses in the Philippines. The flu season in the country is from June to November, coinciding with the rainy season. The Department of Health (DoH) said that 9,491 flu-like cases nationwide were recorded from July 28 to Aug.
10, 55% higher compared to 6,124 cases reported in the previous week. All regions except the Bangsamoro in southern Philippines showed an increase in flu-like cases during this four-week period. Annual seasonal influenza epidemics have a substantial economic impact through reduced workforce productivity and increased pressure on healthcare services.
Seasonal influenza is an acute respiratory infection caused by influenza viruses. There are four types of influenza viruses, types A, B, C, and D. Influenza A and B viruses circulate and cause seasonal epidemics, according to the World Health Organization (WHO).
Symptoms of influenza usually begin around two days after being infected by someone who has the virus. These include sudden onset of fever, cough (usually dry and can be severe and last two weeks or more), headache, muscle and joint pain, severe malaise (feeling unwell), a sore throat, and a runny nose. Seasonal influenza spreads easily, with rapid transmission in crowded areas including schools and nursing homes.
When an infected person coughs or sneezes, droplets containing viruses (infectious droplets) are dispersed into the air and can infect persons in close proximity. The virus can also b.