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The monthly average ovitrap index rose to 13% in July from 11% in June, the Food & Environmental Hygiene Department said today.
Six districts recorded readings at or above the alert zone of 20%, including Diamond Hill (25.9%), Tsim Sha Tsui (24.1%), Sheung Shui (22.2%), Tung Chung (22.2%), Ma On Shan (20.4%) and Pok Fu Lam (20%).
The average ovitrap index at ports dropped to 0.8% from 1.6%.
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