Test 1 Flashcards
In what ways do humans rely on animals?
- Source of food
- Companionship
- Transportation
- Entertainment
- Sport
- Biomedical research etc.
What is zooeyia?
Alludes to the benefits of pet ownership to individuals and communities
Ex: Pets as family
Zoonotic disease
A disease communicable between humans and animals under natural conditions (not lab related)
- Transmission both ways
- Can be direct or indirect
Direct Zoonoses Examples
- Rabies
- Intestinal parasites
- Psittacosis
Indirect Zoonoses Examples
- RMSF (tick vector)
- West Nile encephalitis (mosquito vector)
- Chagas disease (“kissing bug” vector)
What is health?
A state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.
What is Public Health?
The science and art of preventing disease, prolonging life, and promoting health through the organized efforts and informed choices of society, organizations, public and private communities and individuals.
OR
What we as a society do collectively to assure the conditions in which people can be healthy
Medicine vs. Public Health
Medicine: saves one life at a time
Public Health: saves millions of lives at a time
What is One Health?
A collaborative, multisectoral, and trans-disciplinary approach–working at local, regional, national, and global levels–to achieve optimal health and well-being outcomes recognizing the interconnections between people, animals, and their shared environment.
What is the essence of public health?
Maximize benefits for the highest number of people while protecting individual rights.
Why is public health controversial?
Ideologies:
- America emphasizes personal freedom and responsibility
- Minimal obligation to the common good
- Conflict between ‘market justice’ and ‘social justice’
Market Justice
- Individual responsibility
- Minimal obligation to the common good
- “Fundamental freedom to all individuals to be left alone”
Social Justice
- Minimal levels of income, basic housing, employment, education and health care should be seen as fundamental rights
- Preventable death and disability ought to be minimized
Economics makes public health controversial
- Long-term gains begin with costs NOW
- Costs are MUCH easier to calculate than benefits
- Costs are borne by wealthier; benefits by less wealthy
Religion and morals makes public health controversial
- Sex education
- Contraceptive use
- Abortion
Life expectancy
Has gone way up in the last 100 years
Most progress in life expectancy is due to?
A decrease in infectious diseases
- Has leveled off since the 1950s
Sir Austin Bradford Hill
English epidemiologist and statistician
- Pioneered the randomized clinical trial
- Demonstrated connection between cigarette smoking and lung cancer
Without key public health interventions or if there were delays, how many excess people would have died between 1901 and 2032?
Almost 50 million
Determinants of overall health and %
Individual Behavior - 40%
Genetics - 30%
Social Circumference - 15%
Environmental Factors - 5%
Health Care - 10%
Social Determinants of Health (SDOH)
Conditions in the environments where people are born, live, learn, work, play, worship, and age that affect a wide range of health, functioning, and quality-of-life outcomes and risks.
5 domains of SDOH
- Economic stability
- Education access and quality
- Health care access and quality
- Neighborhood and built environment
- Social and community context
SDOH-Economic Stability
- 1 in 10 people live in poverty in US
- Employment programs, career counseling and high-quality childcare can help more people find and keep jobs.
- Policies to help people pay for food, housing, health care, and education can reduce poverty and improve health and well-being.
SDOH-Education Access and Quality
- Interventions to help children and adolescents dow ell in school and help families pay for college can have long term health benefits.
- Higher educations = more likely to be healthier and live longer
SDOH-Health Care Access and Quality
- 1 and 10 people in the US don’t have health insurance
- Strategies to increase insurance coverage rates are critical for making sure more people get important health care services, like preventive care and treatment for chronic illnesses
SDOH-Neighborhood and Built Environment
- Many people live in areas with high rates of violence, unsafe air or water, and other health and safety risks
- Interventions and policy changes at the local, state, and federal level can promote health
SDOH-Social and Community Context
- Positive relationships at home, at work, and in the community can help reduce these negative impacts
- Interventions to help people get the social and community support they need are critical for improving health and well-being
Health Disparities
Preventable differences in the burden of disease, injury, violence, or opportunities to achieve optimal health that are experienced by socially disadvantaged populations
Health disparities result from multiple factors, including:
- Poverty
- Environmental factors
- Inadequate access to health care or options
- Individual and behavioral factors
- Educational inequalities
Levels of Prevention Strategies
Primary
- Avoid disease development
- Remove risk factor
Secondary
- Early detection treatment
- Prevent progression
Tertiary
- Reduce complications of est. disease
Return on Investment at the Primary Level
Intervening at the primary level (i.e. with a vaccine) saves $$$$
What is the neglected component of the one health triad?
Environment
What is environmental health?
All physical, chemical, and biological factors external to a person, and all the related factors impacting behaviors
How many deaths are related environmental factors?
About 13 million are due to known avoidable environmental risks (about 25% of deaths worldwide)
What is one of the biggest environmental health risks?
Air pollution
How much of the world is exposed to unsafely managed water, inadequate sanitation and poor hygiene?
More than half the world. Resulting in 800k deaths each year
How many people die from unsafe workplace and how many die from exposure to chemicals?
More than 1 million for both
How does climate change compromise the ecological and environmental integrity of living systems?
- Inducing lifecycle changes in pathogens, vectors, and reservoirs
- New and emerging diseases of plans and food and domestic and wild animals
- Trophic cascades
- Modifying or destroying habitats
- Interfering with species in a particular habitat
What is termed the “threat multiplier” and why?
Climate change; b/c it adversely affects infectious diseases, zoonosis, food security and safety, and local, regional, & global responses to them.
Who is being harmed first and the worst by the climate crisis?
The people who contribute the least to its causes: people in low-income and disadvantaged countries and communities.
How many approximate deaths will occur between 2030 and 2050 due to climate change?
~250k from malnutrition, malaria, diarrhea, and heat stress alone causing the $2-4 billion per year
What is malaria?
The world’s most important and deadly tropical mosquito-borne parasitic disease.
- Kills approximately 1 million people and affects 1 billion
Example of a fungal pathogen
Potato famine
Soybean rust
Extreme weather events affecting health
Heat waves, floods, hurricanes
Socioeconomic and Behavioral factors:
- Change location of urban centers due to flooding
- Population migrations
- changing land use regulations
- Changing agricultural practices
930 million people spend at least how much of on health care?
At least 10% of their household budget to pay for healthcare
What would happen if a loss of biodiversity occurs?
It may limit the discovery of potential treatments for many diseases and health problems.
Nutritional impact of biodiversity
Ensures the sustainable productivity of soils and provides the genetic resources for all crops, livestock, and marine species harvested for food
Major processes affecting infectious disease reservoirs and transmission
- Deforestation
- Land-use change
- Water management i.e. through dam construction, irrigation
- Uncontrolled urbanization or urban sprawl
- Resistance to pesticide chemicals used to control certain disease vectors
- Climate variability and change
- Migration and international travel and trade
- Accidental or intentional human introduction of pathogens
What are trophic cascades?
The effects of removal or addition of keystone species that propagate through food webs across multiple trophic levels
1st trophic level
producer level
2nd trophic level
Prey primary consumer level
3rd trophic level
predator
Keystone species
Present when a single species, or just a few species, play a crucial role in maintaining the structure of an ecological community
- disappearance of a keystone species results in a complete rearrangement of the food web
True or False: trophic cascade can only be top down?
False: It can be either top down or bottom up
How do vets safeguard public health?
Either directly or indirectly, it can be categorized into 6 core domains:
- Diagnosis
- Surveillance
- Epidemiology
- Control
- Prevention
- Elimination of Zoonotic Diseases
How do vets best serve communities?
When they approach collective health issues with a “heard health” perspective, applying epidemiologic principles
Small Animal examples of zoonoses
- West Nile disease
- Coccidiodomycosis
Large Animal examples of zoonoses
- Bovine leukosis
- Foot and mouth disease
- Fowlpox
Why care that livestock are vulnerable to infectious disease?
~20k food borne illnesses, 4.2k hospitalizations, and 80 deaths, most of which are caused by pathogens of animal origin
Lab animal facilities and diagnostic labs
Vets manage and maintain lab animal colonies for research and diagnostic efforts
- International collab is important
Vets and Health Education
All vets help educate the public on the threat of infectious and noninfectious diseases
Vets in in government/legislative activity
More than 3k are employed federally
- 66% at USDA
- Others at DoD, DHHS (CDC, FDA, NIH)
Who shares responsibility of ensuring that food, animal feed, drugs, vaccines and devices are safe and efficacious?
FDA, USDA, and the EPA
APHIS
Animal and Plant Health Inspection Service
- Oversees the possession, use, and transfer of certain biologic agents and toxins
What does the FDA regulate?
All foods and food ingredients introduced into or offered for sale in the interstate commerce (except for meat, poultry, and certain processed egg products which are regulated by the USDA)
What does the FDA’s Center for Veterinary Medicine regulate?
Animal drugs, animal feeds, and veterinary devices
What does the USDA regulate?
Animal vaccines and biologics
- and meat, poultry and certain processed egg products
What does the EPA regulate?
Many pesticides
FDA vs EPA (flea control)
- Most insecticides are regulated by EPA
- Some products (topical applied flea control) are intended to work systemically and are regulated by FDA
- This means licensed vets can use Revolution off label b/c it’s regulated by FDA
Where do vets fall in the USDA?
- Under Secretary for Food Safety
- Under Secretary for Marketing and Regulatory Programs (animal and plant health inspection service)
FSIS
Food Safety and Inspection Services
- Enhances public health and well-being by protecting the public from food borne illness and ensuring correct packaging
What is the overall job of the State Veterinarian?
- Directly protects livestock, poultry, and aquaculture industries
- Indirectly protecting the public through regulation of livestock, poultry, and fish diseases
What do State Public Health Vets typically do?
- Work in zoonotic disease control and prevention, directly focusing on protecting the public health
State Vet vs. Public Health Vet
-State: works for the state agriculture department; primarily target livestock diseases
-Public Health: works for the state health department; generally work in zoonotic disease control and prevention
NASPHV (National Association of State Public Health Vets)
- Helps direct and develop uniform public health procedures involving zoonotic diseases
- Compendium of animal Rabies Prevention and Control
How many vets are in the 117th Congress?
3; 2 in senate, 1 in house
Reportable and Notifiable diseases
Legally, physicians and other health-care providers must report cases of certain diseases to health authorities
- Usually infectious and communicable diseases that will endanger a population
- Animal diseases of great economic importance
WHO International Health Regulations
- 1969: cholera, yellow fever, plague
- 2005: broadened the scope to focus on criteria to determine whether an event is notifiable to the WHO
NNDSS (National Notifiable Diseases Surveillance System)
- Helps public health monitor, control and prevent about 120 diseases