為了加強防疫，不少公眾場所都會要求入場人士需要先探熱，確保沒有發燒方可進場。同樣，留在家中抗疫人士亦需要定時探熱，確保沒有發燒。但探熱體溫幾多度先叫發燒？不同的探熱方法，體溫參考值都有所不同。衛生署衛生防護中心公開了口探、肛探、腋探和耳探的體溫參考值，同時提醒市民紅外線額探的度數有機會未必準確。
衛生署衛生防護中心於Facebook提醒，口探37.5度、耳探38度或以上就是發燒。根據衛生防護中心的體溫監測須知，探熱方法可分為口探、肛探、腋探、耳探及額探等，體溫隨年齡、每天時間及身體活動而變化。以下是衛生防護中心提供的不同探熱方法的體溫參考值。
體溫監測須知亦提到，原來最多人使用的紅外線額探溫度計不能提供可靠的溫度讀數。由於紅外線額探溫度計方便使用，經常被用作體溫篩檢。不過，曾有外國研究報告指出此類儀器不能提供可靠的溫度讀數。因此，如對紅外線額探溫度計所量度的第一個讀數有懷疑，應使用其他探熱器再次量度以作確定。
來源︰衛生防護中心、FB@衛生防護中心、TERRAILLON
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