As temperatures soar, the Centre for Health Protection (CHP) of the Department of Health is issuing a stark warning to the public, particularly those engaged in outdoor activities. Today, August 3, health officials emphasized the importance of taking preventive measures against heat stroke and sunburn during this extreme heat.
“People should carry and drink plenty of water to prevent dehydration while participating in outdoor activities,” a CHP spokesman advised. With the heat reaching dangerous levels, staying hydrated is crucial for everyone, especially those who exert themselves outdoors.
The spokesman further cautioned against consuming beverages that could exacerbate dehydration. “Those engaged in strenuous outdoor activities should avoid caffeine-laden drinks, such as coffee and tea, as well as alcohol, as these can accelerate water loss,” he explained.
Certain groups are particularly at risk, including infants, children, the elderly, pregnant women, and individuals with chronic conditions like heart disease or high blood pressure. Outdoor workers and those who are overweight are also more vulnerable. The CHP urged these populations to exercise heightened caution and monitor their health closely during the current heatwave.
As Hong Kong grapples with these soaring temperatures, health officials are reminding residents that simple precautions can go a long way in preventing heat-related illnesses.
The public should adopt the following precautions:
- Wear loose and light-coloured clothing to reduce heat absorption and facilitate sweat evaporation and heat dissipation;
- Avoid vigorous exercise and prolonged activities like hiking or trekking as heat, sweating and exhaustion can place additional demands on the physique;
- Perform outdoor activities in the morning or the late afternoon, if possible;
- For indoor activities, open all windows, use a fan or use air-conditioning to maintain good ventilation;
- Do not stay inside a parked vehicle; and
- Reschedule work to cooler times of the day if feasible. If working in a hot environment is inevitable, introduce shade in the workplace where practicable. Start work slowly and pick up the pace gradually. Move to a cool area for rest at regular intervals to allow the body to recuperate.
The public should also note the latest and the forecast Ultraviolet (UV) Index released by the Hong Kong Observatory (HKO). When the UV Index is high (6 or above):
- Minimise direct exposure of the skin and the eyes to sunlight;
- Wear long-sleeved and loose-fitting clothes;
- Wear a wide-brimmed hat or use an umbrella;
- Seek a shaded area or put on UV-blocking sunglasses;
- Apply a broad-spectrum sunscreen lotion with a minimum sun protection factor (SPF) of 15, preferably higher. Reapply every two hours if you stay out in the sun, and after swimming, sweating or towelling off; and
- While using DEET-containing insect repellents for personal protection against mosquito-borne diseases, apply sunscreen first, then insect repellent.
If symptoms develop, such as dizziness, headache, nausea, shortness of breath or confusion, rest and seek help immediately, and seek medical advice as soon as possible.
The public may obtain more information from the DH’s Health Education Infoline (2833 0111), heat stroke page and UV radiation page; the HKO’s Dial-a-Weather (1878 200), latest weather report and forecast, UV Index and weather information for hiking and mountaineering; and press releases of the Labour Department on precautions against heat stroke for outdoor workers and their employers when the Very Hot Weather Warning is in force.
