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Transcript
Case study: infectious
disease
Professor Anne Johnson FMedSci
Head, Department of Primary Care and
Population Sciences, Royal Free and
University College Medical School,
London
Background
Globally:
• infections cause over a fifth of all
deaths
• a million children die each year
from diseases preventable through
vaccination
In the UK, infectious diseases account
for:
• over 10% of deaths
• one in three GP consultations
New infectious diseases: one per year
Public health measures
relating to infectious disease
1) Prevention through vaccination
2) Surveillance
3) Control strategies
Prevention through vaccination
• Aims of vaccination:
– to protect individuals
– to protect vulnerable or at-risk
individuals
– to achieve ‘population immunity’
• Concerns about safety of vaccines
• ‘Free riders’
Prevention through vaccination
• Three broad approaches to
vaccination policy:
– voluntary
– incentivised
– quasi-mandatory
Conclusions:
– No justification for moving
beyond voluntary system in UK
for childhood vaccination
Surveillance
• Population surveillance using
anonymised data
– Conclusion: acceptable for
predicting trends
• Notifiable disease surveillance using
identifying data
– Conclusion: acceptable for
avoiding harm to others if
invasion of privacy is minimised
Surveillance
• Global surveillance of infectious
diseases is vital
• Problems if countries do not have
capacity or do not cooperate
• Conclusions:
– UK should enhance surveillance
capacities of developing countries
– WHO should explore virus isolates as
‘public good’
– WHO should impress social
responsibilities on pharmaceutical
companies
Control
• Quarantine and isolation are at the
top of the intervention ladder
• Conclusion: ethical justification
involves weighing the harm
principle with consent and
avoiding intrusive interventions
Information and
communication
• Effective communication is crucial
• Risks should not be downplayed or
overstated
• Conclusions:
– Government should ensure the timely
provision of information about
outbreaks
– Those who report research have a
duty to communicate findings in a
responsible manner