Preparedness And Response Plan For Influenza Pandemic

Objectives

Provide a risk-based framework for Hong Kong’s preparedness for, and response to, influenza pandemics, using Alert, Serious and Emergency response levels determined by the likelihood and health impact of a novel influenza virus.[1]Assess transmissibility, geographical spread, clinical severity, population vulnerability, available vaccines and antivirals, and international health advice, while revising assessments as evidence and the pandemic evolve.[1]

• Prevent and control novel influenza affecting humans, birds and other animals through coordinated planning, surveillance, investigation, laboratory support, infection prevention and control, medical-service readiness, port health, vaccination, antiviral preparedness and public communication.[2][3][4]
• Strengthen animal-health protection through farm biosecurity, vaccination of local chickens against H5 avian influenza, import controls, live-poultry-chain surveillance, market hygiene and readiness for culling operations.[5][6]
• Detect and manage human cases rapidly through reporting, contact tracing, quarantine where appropriate, clinical management, infection control, laboratory confirmation and targeted antiviral treatment or prophylaxis.[7][8]
• Mitigate severe pandemic impacts when containment is no longer effective by slowing epidemic progression, minimising deaths, buying time for vaccine production and using health resources efficiently.[9]
• Maintain preparedness in normal times through contingency planning, exercises, scientific evidence review, continuity planning and collaboration with Mainland and Macao health authorities.[3]

Implementation

Implement the plan through escalating cross-government command arrangements, operational preparedness measures and surveillance-led risk assessment.[10][2]The Health Bureau coordinates the Alert Response Level, a Steering Committee chaired by the Secretary for Health leads the Serious Response Level, and a Steering Committee chaired by the Chief Executive leads the Emergency Response Level.[10][2]

• Activate or stand down response levels using advice from the relevant health, agriculture, fisheries, food-safety and environmental authorities, with the Chief Executive or delegate acting at Emergency level on the Secretary for Health’s advice.[11][10]
• Coordinate the Department of Health, Hospital Authority, Agriculture, Fisheries and Conservation Department, Food and Environmental Hygiene Department and other government bodies, while engaging private hospitals, professional organisations, non-governmental organisations, community services and relevant businesses.[2][3][4]
• Establish sub-committees and co-opt senior officials or external experts where required to address operational and specialist issues.[2]
• Require bureaux, departments, companies and organisations to develop contingency arrangements, conduct regular exercises, revise plans and maintain essential services.[1][3]
• Operate integrated surveillance through statutory notification, sentinel and hospital reporting, residential-care monitoring, live-poultry surveillance, monitoring of wild birds and retail outlets, laboratory testing and information exchange with Guangdong and Macao.[3][6][12]
• Apply outbreak controls including import restrictions, farm and market biosecurity, cleansing and disinfection, quarantine, closure of affected premises, culling where necessary, waste-disposal support and protection for exposed workers.[6][12][7]
• Maintain diagnostic and health-system capacity through specimen collection, virus isolation, typing, subtyping, characterisation, referral to World Health Organization Collaborating Centres, personal protective equipment, antiviral and reagent stockpiles, isolation facilities and bed-mobilisation arrangements.[13][14][8]
• Implement proportionate public-health measures including traveller screening and referral, health declarations, vaccination according to priority groups, daily public updates, risk communication, hotlines, welfare support and collaboration with international and Mainland authorities.[5][15][9]
• Monitor implementation through influenza-like-illness and hospital-utilisation data, laboratory and antiviral-resistance monitoring, vaccine safety surveillance, community feedback and review of response actions.[15][16][9]
• Adapt interventions during a severe mitigation-stage pandemic by retaining essential surveillance, reducing non-essential testing, investigation and quarantine activities, and reviewing emergency measures as conditions change.[9]

Monitoring & Evaluation

The plan uses a continuously updated, risk-based monitoring and evaluation approach to determine activation, escalation and stand-down of Alert, Serious and Emergency response levels. Assessments consider transmissibility, geographical spread, clinical severity, population vulnerability, availability of vaccines and antivirals, and advice from the World Health Organization (WHO) and other international authorities.[1][10]Risk assessments are revised as evidence develops, including information on high-risk groups, case fatality, complications, reproductive number and whether human-to-human transmission can sustain community outbreaks.[1][11]

• Require notification of suspected or confirmed influenza with pandemic potential under Hong Kong's Prevention and Control of Disease Ordinance.[3]
• Monitor influenza-like illness through general outpatient, private and Chinese medicine clinics, elderly homes, child care centres, hospital data, residential-care facilities and surveillance of poultry and other animal populations.[3][6][12]
• Collect weekly data on hospital discharges, intensive care admissions and deaths associated with influenza or pneumonia, and monitor pneumonia or chest-infection admissions among elderly-home residents.[3]
• Exchange monthly influenza-like illness data and information on unusual infectious-disease patterns with Guangdong and Macao health authorities.[3]
• Enhance surveillance during animal outbreaks through monitoring of farms, sentinel birds, imported and retail poultry, wild birds, pet bird shops, recreational parks and the live-poultry supply chain.[6][12][7][8]
• Require farmers and retailers to report sick or dead birds immediately for collection and laboratory examination, while enforcing biosecurity, hygiene and food-safety requirements, including penalties for non-compliance.[6][12]
• Conduct contact tracing, medical surveillance and risk-based antiviral follow-up for people exposed to infected birds or confirmed human cases.[4][8]
• Monitor influenza-like illness among poultry workers, survey workers on affected farms, undertake seroprevalence studies and monitor the health of personnel involved in culling.[7]
• Use zero reporting from public and private hospitals for influenza A (H5) or novel influenza cases during confirmed human infections, and notify WHO in line with the International Health Regulations (2005).[8]
• Operate e-flu and other information systems for real-time monitoring of cases and contacts, while reviewing surveillance criteria with the Hospital Authority.[8]
• Maintain laboratory surveillance through specimen collection, rapid testing, virus isolation, typing, subtyping, characterisation, serology, antiviral-resistance testing and selected gene sequencing, with referral of isolates to WHO Collaborating Centres and other reference laboratories where appropriate.[13][7][8]
• Monitor bed occupancy, hospital utilisation, Accident & Emergency attendances, admission-guideline compliance and the need to reduce non-emergency activity as pressure on services changes.[14][15][16]
• Monitor vaccination reactions and adverse effects, vaccine effectiveness where a vaccine is available, community concerns and the implementation of communication and response measures.[15][16]
• Provide daily epidemic and government-response updates during mitigation, while limiting surveillance to essential elements and scaling down routine case investigation, quarantine and universal confirmatory testing when containment is no longer effective.[9]
• Assign activation and stand-down accountability to the Secretary for Health on departmental risk-assessment advice at lower levels, and to the Chief Executive or delegate, advised by the Secretary for Health, at Emergency level.[11][10]

The plan identifies surveillance, reporting, laboratory testing, departmental advice, international notification, enforcement and public communication as accountability mechanisms.[2][4][14]However, it does not specify quantified performance indicators, indicator targets, formal evaluation cycles, reporting deadlines beyond stated daily, weekly and monthly arrangements, or a separate overarching accountability framework.[7][8]

Costing & Financing

The plan emphasises operational resource readiness rather than a costed financing framework. It provides for maintaining and mobilising personal protective equipment, antivirals, medicines, laboratory reagents, diagnostic capacity, vaccines, quarantine facilities, isolation capacity, clinical beds, communications systems and waste-disposal arrangements.[13][14][15][16]

• Maintain antiviral stockpiles for treatment and post-exposure chemoprophylaxis of defined target groups, and procure suitable pandemic vaccines for prioritised vaccination.[9]
• Review personal protective equipment stocks for culling and outbreak-response operations, and conduct exercises to test culling preparedness.[5][12]
• Stockpile reagents, medications and antivirals; strengthen laboratory testing and technology transfer; and prepare quarantine centres and bed-mobilisation arrangements.[14]
• Mobilise isolation, convalescent and other clinical-service capacity, including reprioritising non-urgent services where epidemic pressures require it.[15][16]
• Support major poultry culling, animal control, policing, clinical-waste handling and solid-waste disposal through cross-departmental operations.[7][15][16]
• Anticipate possible shortages of medical supplies, including antivirals, and territory-wide infrastructure disruption during a severe pandemic.[9]
• Review and revise emergency actions as circumstances evolve in order to use health resources efficiently.[9]

No budgets, expenditure estimates, programme costings, funding sources, allocations, funding gaps, resource-mobilisation targets or economic assumptions are specified for surveillance, laboratory capacity, vaccination, antiviral stockpiles, culling, quarantine, clinical care, waste disposal or communications.[7][8][15][16][9]