Socpop phase2 Flashcards
what is surveillance
• “surveillance is the ongoing systematic collection, collation, analysis and interpretation of data, and the dissemination of information (to those who need to know) in order that action may be taken”. Ie “Information for action”
Reasons for surveillance systems?
- monitor trends (allowing time to plan)
- early warning for outbreak (allowing time for response)
- plan and monitor intervention
- control measures
what are notifiable diseases?
• 31 notifiable diseases
o e.g. meningitis, measles, TB, food poisoning, malaria, mumps, rubella, tetanus, HUS, polio, hepatitis, cholera, Ecoli
who to notify?
- Public health england
- RCGP for influenza
- NHS 111
- GP
- Emergency Department Syndromic surveillance
Who does what in communicable disease control?
• Public Health England
o Takes notifications of infectious disease and manages outbreaks & chemical/environmental incidents
• NHS England
o Leads NHS response to an outbreak
• CCGs
o Supports NHS England
• Primary Care trust
o Supports outbreak investigation and management by taking samples, treating, and providing prophylaxis
• Acute hospital trust
o Provides microbiological advice. In hospital incident manages outbreak.
• Local Authorities
o Environmental Health Offices support investigation of outbreak. Food questionnaires, stool samples, inspection of food premises. Powers to prosecute.
o Director of Public Health provides plans, supports outbreak response.
what agent/host/environmental factors affect disease spread?
• Agent
o Organism: virus/bacteria/fungus/rickettsia/protozoa
• Host
o Factors: age/gender/ethnicity/lifestyle/socioeconomic/immune
• Environment
o Climate/crowding/sanitation
name 5 direct and 3 indirect modes of transmission?
Direct modes of transmission
• Touching – (scabies)
• Sexual contact
• Droplet spread – (measles, mumps, flus, meningococcal)
• Transplacental – (HIV)
• Faeco-oral – (campylobacter, salmonella, Ecoli 0157, Hep A)
Indirect modes of transmission
• Vehicle borne (flu) surfaces, food, water, blood, tissues
• Vector borne (malaria)
• Airborne (TB, fungi)
define sporadic, endemic, hyperdendemic, cluster, epidemic/outbreak, pandemic
Sporadic
o Irregular pattern of disease, occasional cases
Endemic
o Persistent low/moderate level of disease
Hyperendemic
o Persistent higher level of disease
Cluster
o Occurrence exceeds the expected level for a given population and/or in a given area and/or in a given time period. Cases have a possible but unconfirmed link.
Epidemic / Outbreak
o Occurrence exceeds the expected level for a given population and/or in a given area and/or in a given time period. Cases have a highly probably or confirmed link. An outbreak is a localised epidemic, 2 or more cases, or a single case of a rare or serious disease eg rabies, diphtheria, polio
Pandemic
o Epidemic occurring worldwide or crossing international boundaries, usually affecting a large number of people
Ways to break the chain of transmission?
- Control the source
- Interrupt transmission
- Protect susceptible population
Stages in managing an outbreak?
- Confirm
- Immediate control
- Convene Outbreak Control Team
- Review Epidemiological and microbiological info
- Case finding
- Definitive Control measures
- Descriptive epidemiology (curves)
- Analytical study (case control or cohort)
- Declare outbreak over
- Communicaiton throughout
describe epidemic curves:
- point outbreak
- propagated outbreak
- continuous source
- Point – all cases arise with one incubation period, suggesting that no cases arose from person-to-person contact. Example: BBQ diarrhoea
- Propagated outbreak- starts with index case, then primary cases, then secondary cases infecting new people who in turn infect others. Successively taller peaks, which then merge into waves. Epidemic continues until number of susceptible individuals declines or until interventional measures take effect.
• Continuous source: abrupt start suggests many people exposed simultaneously rather than spreading person-to-person. Group of people exposed to a single noxious influence like a contaminated water supply.
What is statutory homelessness?
o 1. If you are eligible for public funds
o 2. Have a local connection
o 3. Are unintentionally homeless
o 4. Have a priority need
♣ household with dependent children
♣ household with pregnant woman
♣ vulnerable bc of physical or mental health
♣ aged 16, 17 or 18-20 and previously in care
♣ vulnerable bc was in care, custody, HM Forces
♣ vulnerable bc fled home due to violence or threat
What are some causes and routes into homelessness?
o Structural factors o Welfare changes o Sanctions o Cuts to legal aid o Lack of affordable housing o Right to buy o Unemployment o Closure of psychiatric hospitals o Routes (sometimes mutil) o Relationship breakdown o Being asked to leave family home o Drug & alcohol o Leaving prison o Mental health o Eviction
What are some common health problems of homeless people?
o Mental illness o Substance abuse o Smoking o Longstanding physical conditions o MSK o Resp o Dental o Eyes o GI o CV o Urinary
what are the top UK and global infectious diseases?
UK Top Infectious Diseases (WHO data 2012)
- Respiratory infections
- Diarrhoeal diseases
- HIV
- STDs
- TB
Global Top Infection Diseases
- Respiratory infections
- Diarrhoeal diseases
- HIV
- Parasitic/vector diseases
- TB
- Meningitis
Malaria - name of parasite, size of the problem, transmission?
o Protozoa infection
o Plasmodium falciparum – Africa and New Guinea
o Plasmodium vivax – Indian suncontinent
o Plasmodium ovale – Africa and S America
o Plasmodium malaria – Africa and S America
o 300 mio people contract in annually
o 1 mio people die, mostly children <5 in Africa
o 10,000-30,000 residents of developed countries contract malaria through travel
o 2,000 cases in UK with 10 deaths per year
vector transmission through mosquitoes
what are some common migrant health issues?
o Infectious disease: HepB/C/HIV/syphilis/TB/leprosy/parasitic
o Malnutrition
o Exposure to conflict, detention & torture
o Trafficking & modern slavery
o FGM
what are refugees screened for?
o TB – interferon gamma assay blood o Haemoglobinopathies – sickle cell or thalassaemia o Hep C o Hep B o Syphilis o HIV o Chlamydia o Others as indicated eg HbA1c
what are non-disease (or social) factors that can contribute to delays in getting a diagnosis?
o Temporalizing of symptomology: placing a time limit before taking action “bring her back in a fortnight”
o Discrediting: defining parent as lacking credibility - “an anxious mum:
Key features of children’s accounts of having childhood cancer
distressing symptoms
o pain most distressing
o itchiness, lack energy, nausea, mouth problems, insomnia, hair loss, altered appearance
disruption of identity & relationships
o changes to appearance – hair loss, steroids, scarring, Hickman lines, ventilator
o treated differently by family & peers
o infantilisation – help with toilet, feeding, bathing
o biographical disruption
o threat to self-identity
uncertainty & fear
strategic management o adopting normalisation strategies o passing as normal o then redesignation of new normal o young children don’t have everything available to adults and older children; less able to resist the things they don’t want
what is health inequality?
o systematic differences in health outcomes between social groups
what is health inequity?
o differences in opportunity between social groups – ie different access to health services, food, housing. This can lead to health inequalities.
o
what is equitable access and equal access?
Equitable access is providing services according to need
Equal access is providing same services to everyone regardless of need
what is horizonal and vertical inequity?
horizontal
o when people with the same needs do not have the same access to the same resources
vertical
o when people with greater needs are not provided with greater resources to meet those needs