As Filipinos head to polling precincts nationwide on Monday, May 12, the Department of Health (DOH) issued a reminder to be vigilant against heat-related illnesses, with parts of the country experiencing a danger-level heat index.

In a public advisory, the agency said the heat index may soar to 45°C in Sangley Point, Cavite City, and Catarman, Northern Samar, based on forecasts from the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).

“Maging handa at alerto sa pagboto dahil sa danger level ng HEAT INDEX sa ilang lugar sa bansa (Be prepared and alert when voting due to danger-level heat index in some areas in the country),” the DOH said in a Facebook post.

Also, the health department advised voters to take basic precautions to protect their health while lining up and casting their ballots.

“Magpahinga, kumain ng tama at wag uminom ng alak, para tumibay ang resistensya at maiwasan ang influenza-like illness o mala-trangkasong sakit dahil sa pabago-bagong panahon (Rest, eat properly, and avoid alcohol to strengthen immunity and prevent flu-like illnesses due to the changing weather),” the DOH added.

In an earlier advisory, the department warned that extreme heat can lead to heat cramps, exhaustion, and in severe cases, heat stroke.

“Ang matagal na pagkakalantad sa init ay nagpapataas ng posibilidad ng heat stroke, isang seryosong kondisyon na may pagkawala ng malay, pagkalito, o kaya ay mga seizure/kombulsyon, na maaaring nakamamatay kung hindi ginagamot (Prolonged exposure to heat increases the risk of heat stroke, a serious condition that can cause loss of consciousness, confusion, or seizures, which may be fatal if left untreated),” it stated.

Voters showing symptoms like dizziness, vomiting, or fatigue are urged to seek help immediately.

“Ilipat ang tao sa isang malilim at malamig na lugar, at ayusin ang bentilasyon. Tanggalin ang panlabas na damit ng tao. Maglagay ng malamig na compress, ice pack, malamig na tubig, o malamig na basang tela sa balat, lalo na sa bandang ulo, mukha, leeg, kilikili, pulso, bukung-bukong, at singit (Move the person to a shaded and cool area and improve ventilation. Remove any outer clothing. Apply a cold compress, ice pack, cold water, or a damp cool cloth to the skin, especially on the head, face, neck, armpits, wrists, ankles, and groin),” the DOH said.

“Kung ang pasyente ay may kamalayan, hikayatin ang madalas ngunit mabagal na pagsipsip ng malamig na tubig. Makipag-ugnayan sa emergency services, o dalhin kaagad ang tao sa ospital (If the patient is conscious, encourage them to take frequent but slow sips of cold water. Contact emergency services or immediately transport the person to the nearest hospital),” it went on.

Health Secretary Ted Herbosa said that monitoring PAGASA updates and staying hydrated are critical in preventing serious heat-related complications.

Voters are also advised to wear light-colored clothing, hats or umbrellas, and apply sunblock if they expect to queue under the sun.