1. Institute for Public Health, Ministry of Health Malaysia, 40170 Shah Alam, Selangor, Malaysia
2. Crisis Preparedness and Response Centre (CPRC), Kedah State Health Department, Ministry of Health Malaysia, 05400 Alor Setar, Kedah, Malaysia
3. Crisis Preparedness and Response Centre (CPRC), Selangor State Health Department, 40100 Shah Alam, Selangor, Malaysia
4. Kuala Muda District Health Office, Ministry of Health Malaysia, 08000 Sg Petani, Kedah, Malaysia
5. Petaling District Health Office, Petaling Jaya, Selangor, Malaysia
6. National Crisis Preparedness and Response Centre (CPRC), Disease Control Division, Minsitry of Health Malaysia, 62590 WP Putrajaya, Malaysia