What defines an emerging infectious disease?
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Mastering this deck will enhance your ability to recognize, understand, and respond to emerging infectious threats, improve outbreak investigation skills, and inform public health strategies for containment and prevention.
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| 1 | What defines an emerging infectious disease? |
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Focus on recent outbreaks, novel pathogens, and public health challenges associated with microbiology.
An emerging infectious disease is one that has recently increased in incidence or geographic range, or has the potential to increase in the near future due to factors like pathogen evolution, environmental changes, or human behavior. |
| Think 'new' or 'reappearing' threats in infectious disease. |
| 2 | Name a recent example of a re-emerging infectious disease. | Tuberculosis (TB) has re-emerged in many regions, partly due to antibiotic resistance and HIV co-infection. | Common latent infection that can reappear under immunosuppression. |
| 3 | Which virus caused the COVID-19 pandemic, and when was it first identified? | SARS-CoV-2, first identified in Wuhan, China, in late 2019. | The 'novel coronavirus' responsible for a global pandemic. |
| 4 | What are some factors contributing to the emergence of new infectious diseases? | Factors include zoonotic spillover, environmental changes, globalization, urbanization, antimicrobial resistance, and climate change. | Consider human-environment interaction and microbial adaptation. |
| 5 | Describe the concept of zoonosis with an example. | Zoonosis refers to diseases transmitted from animals to humans; example: Ebola virus originating from wildlife reservoirs like bats or primates. | Think 'animal to human' transmission. |
| 6 | What is antimicrobial resistance (AMR), and why is it a public health challenge in emerging diseases? | AMR is the ability of microbes to resist antimicrobials, leading to treatment failure and increased spread of resistant pathogens, complicating outbreak control. | Resistant bacteria making antibiotics less effective. |
| 7 | Name a novel pathogen identified in recent outbreaks. | SARS-CoV-2 is a novel coronavirus identified in 2019 that caused the COVID-19 pandemic. | Think 'new virus' causing a global health crisis. |
| 8 | What is the significance of 'vector-borne' diseases in emerging infections? | Vector-borne diseases are transmitted by vectors such as mosquitoes or ticks; their emergence is driven by environmental changes, urbanization, and vector adaptation, exemplified by Zika and dengue viruses. | Vectors are carriers like mosquitoes. |
| 9 | How does climate change influence the emergence of infectious diseases? | Climate change alters habitats and vector distribution, expands the range of vector-borne diseases, and affects pathogen survival, leading to increased emergence and re-emergence. | Think about changing weather patterns and disease spread. |
| 10 | What role does globalization play in the spread of emerging infectious diseases? | Global travel and trade facilitate rapid dissemination of pathogens across borders, enabling outbreaks to become pandemics more quickly. | Consider air travel and international commerce. |
| 11 | What is ‘spillover’ in the context of emerging infectious diseases? | Spillover is when a pathogen jumps from its natural animal reservoir to humans, often leading to outbreaks or pandemics. | Imagine a virus crossing species barrier. |
| 12 | Why are healthcare settings vulnerable to emerging infectious diseases? | Healthcare settings involve immunocompromised patients and invasive procedures, which can facilitate transmission of novel or resistant pathogens. | Think nosocomial (hospital-acquired) infections. |
| 13 | What public health strategies are critical in managing emerging infectious diseases? | Surveillance, rapid diagnostics, vaccination, infection control measures, public education, and international cooperation are essential. | Think 'early detection and response.' |
| 14 | Name a recent outbreak linked to antimicrobial resistance. | The spread of carbapenem-resistant Enterobacteriaceae (CRE) in healthcare settings is a significant example. | Resistant bacteria in hospitals. |
| 15 | How has the concept of 'One Health' contributed to understanding emerging diseases? | One Health recognizes the interconnectedness of human, animal, and environmental health, promoting integrated approaches to prevent and control emerging infections. | Think 'human-animal-environment' synergy. |
| 16 | What is a ‘viral mutation’ and its significance in emerging diseases? | A viral mutation is a genetic change that can alter transmissibility, virulence, or vaccine effectiveness, contributing to emergence or re-emergence, as seen with SARS-CoV-2 variants. | Genetic 'typos' that can change the game. |
| 17 | What is the role of wildlife in the emergence of infectious diseases? | Wildlife can serve as reservoirs for pathogens that may spill over into humans, especially with habitat encroachment and illegal wildlife trade. | Consider bats, primates, and other wild animals. |
| 18 | Describe the impact of urbanization on infectious disease emergence. | Urbanization creates dense populations and poor sanitation, facilitating transmission of infectious agents and emergence of outbreaks. | Crowded cities and disease spread. |
| 19 | What is a 'super-spreader' event? | An event or individual that causes a disproportionate number of secondary infections, significantly amplifying an outbreak, as seen in COVID-19 and SARS outbreaks. | Think 'mass transmission.' |
| 20 | Explain how vaccines can influence the re-emergence of infectious diseases. | Vaccine hesitancy, waning immunity, or gaps in coverage can lead to decreased herd immunity and resurgence of diseases like measles. | Vaccination gaps can cause outbreaks. |
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