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Frederick S. Southwick, MD

As an expert in infectious diseases, editor of the Journal of Infectious Diseases and author of the textbook Infectious Diseases: A clinical short course, McGraw-Hill April 2020, I have been concerned about the misinformation being shared about the COVID-19 epidemic. How did this disease develop? Where did it come from? How does it cause diseases? The answers to these questions will be answered in the first video of module 1. The world has been startled and frightened by the rapid spread of this virus throughout the world. In Video 2 the epidemiology as presently understood is reviewed. This video will be periodically updated recognizing the rapid progression of the pandemic. Many want to know how does this disease present, what are the symptoms associated with COVID-19? How dangerous is COVID-19? Who is at risk of dying? All these questions are answered in Video 3. And finally how is this disease best treated and how can we slow the spread of the infection? These questions are answered in video 4. In addition to the videos multiple choice questions are included to test your understanding and there is an epidemiology peer reviewed exercise designed to teach you how this infection is spread and to show the power of the tracing of cases and isolating those who are infected. The second peer review exercise will encourage you to create a campaign to shift your countries culture to embrace behaviors that can lead to suppression of the epidemic, behaviors that will save lives. After completing this course you will be armed with the knowledge and skills to make a difference and help to bend the curve.

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Syllabus

How SARS-CoV-2 Causes Disease in Humans and Spread Around the World
Coronaviruses infect many species of animal including the bat. These RNA viruses frequently mutate particularly in bats, and chance mutations rendered the SARS-CoV-2 capable of readily infecting humans. The bat virus infected an intermediate host, possibly the Pangolin that was sold in the live fish and animal market in China. A key virulence (characteristic that allows a pathogen to cause disease) factor is the S protein which was the likely primary target of the mutations. This protein forms knobs on the outer surface of the virus that bind strongly to the ACE2 receptor on human respiratory epithelial cells. Binding is followed by internalization and within the cell the virus replicates its RNA using a replicase and assembles into a nuclear capsid in the host cell cytoplasm RNA is also translated into proteins that coat the outer surface of the virus. Once fully assembled the virus is exocytosed (released) from vesicles. The new viral particles can infect other cells and spread to other humans. Because of the inaccuracy of the viral replicase as the virus actively grows it produces point mutations. Some of these mutant virus more effectively infect cells. The alpha variant became prominent in the Winter and Spring of 2021 subsequently a more highly infectious variant the Delta variant that originated in India dominated and now a third variant, omicron that originated in South Africa is now spreading throughout the world and quickly dominating in Europe and the U.S. The virus first replicates in the throat and nasal passages and then spreads to the trachea, bronchi and alveoli where it induces inflammation and damage to the alveolar walls causing fluid to leak into the air exchanging sacks and interfering with oxygen exchange. If inflammation continues the alveolar walls become fibrosed (scarred) and further compromising oxygen exchange resulting in decreases in oxygen saturation (hypoxia). SARS-CoV-2 is able to spread efficiently from person to person primarily by droplets and aerosol (tiny particles that stay in the air for hours). Infection quickly spread throughout the world and caused a pandemic within 3 months. Humans were infected at the Huanan live fish and animal market. The infection initially was confined to workers in the market (point source) but then quickly spread person to person within the first 10 days. Because of the lack of travel restrictions early in the outbreak Chinese traveling from the area quickly spread the virus to many other countries. In the early phases lack of therapy or vaccine allowed the virus to move from person to person unchecked with a steep exponential curve with a doubling of cases every 2-3 days. This virus is one of the most infectious ever reported each infected person on average infecting 2.0 to 2.7 people, the alpha variant can infect 3.0-5.0, the Delta variant one person on average infects 5-8 individuals and the omicron 10-16. The last two variants can cause breakthrough infections in vaccinated individuals. Another characteristic that has allowed rapid spread is the existence of 40-60% asymptomatic or minimally symptomatic carriers. 10% are superspreaders infecting on average 10-80 others.
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COVID-19 Symptoms and Signs, Diagnosis, and Treatment
COVID-19 presents similarly to influenza. The most common symptoms are fever (>100.4 °F or 38°C), dry cough, and shortness of breath. Other common symptoms include marked fatigue, myalgias (muscle aches), headache, and sorethroat. Chest tightness can develop early in severe cases. Diarrhea and vomiting less commonly can be presenting complaints. Physical exam is usually unremarkable with the exception of fever, tachycardias (elevated pulse), an elevated respiratory rate and low oxygen saturation on room air. Lymphadenopathy is usually not present and pulmonary exam is unremarkable. Laboratory studies are nonspecific with a low lymphocyte count, low platelets, elevated CRP, and normal procalcitonin level. CXR is insensitive (60% sensitivity) chest CT being more sensitive and highly specific and is the study of choice in patients being considered for admission to the hospital. Treatment consists of supportive care by administering nasal O2 to maintain saturation above 92%. If nasal O2 fails to achieve appropriate oxygenation intubation and mechanical ventilation with PEEP (positive end expiratory pressure) is recommended and standard ARDS protocols should guide care. Septic shock with end organ damage can develop and standard sepsis protocols are recommended with the exception of fluid administration which should be cautious.
Preventing the Spread of SARS-CoV-2
The critical management tool for this disease is prevention through infection control methods. The 5 tactics for preventing the spread of infection were promoted from the very beginning of the pandemic 1. Identification and isolation of infected individuals. 2. Quarantining all contacts of infected patients 3. Social (or physical) distancing of individuals >70 yo, 4. Social distancing by everyone and 5. Closing of schools, universities, and nonessential businesses. Modeling by the Imperial College revealed that suppression (instituting all 5 tactics) was the only way to reduce R sub 0 to <1. Mitigation ( lowering the R sub0 but remaining > 1 allows the infection to continue and demands for treatment then outstrip the capacity of each country's health system. Campaign methods will need to be used to encourage effective infection control practices by everyone. A major challenge particularly in the United States disinformation. If people don't believe the disease is a concern they will resist following the 5 practices. Another major issue has been the socioeconomic consequences of closing schools, universities and businesses. The blunt approach of shelter in place should be avoiding whenever possible. A combination of infection control practices best described using the Swiss cheese analogy should allow a partial opening. However, this approach requires consensus and alignment. Each individual must agree to 1. wear a face mask in any potential infectious environment. 2. Avoid crowds and when necessary limit the duration of exposure. 3. Avoid closed poorly ventilated spaces , outdoor gathering being preferred. 4. Practice 6 foot physical distancing. 5. Practice good hand hygiene 6. Avoid touching your face and eyes. and 7. Ignore rumors and conspiracy theories and listen to acknowledged experts. Governments and institutions must provide adequate supplies of Personal Protective Equipment (PPE), provide accessible, timely and effective testing, respond to positive tests by contact tracing and appropriate quarantine and isolation procedures, create consistent scientifically based messages about infection control, treatment and vaccination. Create effective supply chains to provide PPE, medications, and vaccines. Vaccination will provide the ultimate solution and efficacious vaccines will soon be available. If enough individuals receive the vaccine herd immunity can be achieved and the pandemic will end.
Advanced Management of COVID-19 for Health Professionals (optional)
This optional module is designed with the clinician in mind. We will assume that students choosing to review this module have a strong medical background because technical terms will be used. Students opting to review this module will learn how to take the most effective history for patients with COVID-19 using an illness script that contains 4 key elements - epidemiology, timing of the progression of illness (illness pace), key symptoms, and past medical history. An assessment score NEWS-2 is described that helps to predict the course and severity of COVID-19. CXR and CT scan for the evaluation of patients are compared and contrasted. Next the roles of RTPCR, point of care Antigen testing and Antibody testing are compared. The use of other laboratory tests - CRP, D-dimer, ferritin, LDH, CPK, troponin and absolute lymphocyte count is reviewed. We show how the application of Bayes' theorem and a tiered differential diagnosis can increase the efficiency and effectiveness of SARS-CoV-2 testing. Next the management of hypoxia and respiratory failure in the ICU is covered in detail. ARDS is defined, and the 4 treatment tools: low volume ventilation, PEEP, fluid management, and prone positioning are described. The basic principles of high quality ICU care are described using the A2F bundle mnemonic. Specific considerations for management of COVID-19 ICU patients are discussed. Next management of COVID-19 patients on the medical-surgical floors is reviewed including admission, and management of proning in the conscious patient. The latest therapies are reviewed including oxygen administration, bronchodilators, diuretics, statins, ACE inhibitors and NSAIDS as well as Remdesivir and Dexamethasone. Judicious use of antibiotics is emphasized and a systematic step by step approach to the patient who is deteriorating clinically is outlined. Guidelines for deciding and managing hospital discharge are reviewed. Finally the pathogenesis and treatment of COVID-19 associate thrombosis are discussed.

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Gives insights into a rapidly evolving disease that has reshaped the world
Covers the latest scientific developments on COVID-19
Instructed by a reputable infectious disease expert
Suitable for a range of audiences, including healthcare professionals, students, and informed individuals
Provides a comprehensive understanding of the virus, its transmission, and treatment options
Empowers learners to make informed decisions about COVID-19 prevention and mitigation
Includes peer-reviewed exercises for practical application of concepts

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Reviews summary

Covid-19: clinical update

Learners largely praise this engaging yet difficulty course that imparts up-to-date clinical insights on COVID-19. They appreciate the well-structured video lectures, informative assignments, and expert instructors. Students highly recommend this course for a solid understanding of COVID-19, although some note the course could be improved with more in-depth information and improved navigation.
Interactive and educational
"Assignments were fun. I would recommend this course to anyone with an interest in Covid-19."
Worth taking
"Hellow I am samruddhi and glad to tell you that I had recive the good grades in this course and completed it."
"This course has taught me many new things and this is very helpful for my future."
"I enjoyed the course and learnt a lot of new information."
Informative and well-paced
"Coming from Dr. Southpick it was not surprising to see such an eye-catching course, professionally addressed, well designed and organized."
"I learned a lot in this very useful course. The explanations are understandable and well illustrated."
"An excellent comprehensive course on COVID-19. Great job by the instructor and the guest presenters."
"Presentations included excellent graphics which truly enhanced the learning process."
Excellent, up-to-date info on COVID-19
"Excellent course with very useful information about Covid-19."
"Very informative regading the methods of diagnosis"
"The course provided a completely overview about Covid-19."
Can be challenging
"It is for the advanced learner."
"This course is really instructive and interesting.Very well designed and organized.It could be improved by giving more in-depth knowledge."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in COVID-19 - A clinical update with these activities:
Review notes from previous epidemiology courses
Reviewing previous coursework will help you refresh your knowledge of epidemiology and prepare you for the material covered in this course.
Browse courses on Epidemiology
Show steps
  • Gather your notes from previous epidemiology courses.
  • Review your notes, focusing on the key concepts of epidemiology.
Complete practice problems on epidemiology
Practicing epidemiology problems will help you develop your skills in analyzing and interpreting data.
Browse courses on Epidemiology
Show steps
  • Find practice problems online or in textbooks.
  • Solve the practice problems.
  • Check your answers and learn from your mistakes.
Create a mind map of the key concepts of epidemiology
Creating a mind map will help you organize your knowledge of epidemiology and identify the relationships between different concepts.
Browse courses on Epidemiology
Show steps
  • Start by writing down the main concept of epidemiology in the center of a piece of paper.
  • Draw branches off of the main concept and write down related concepts.
  • Continue adding branches and concepts until you have a comprehensive mind map of epidemiology.
Five other activities
Expand to see all activities and additional details
Show all eight activities
Attend a workshop on epidemiology
Attending a workshop on epidemiology will allow you to learn from experts in the field and network with other professionals.
Browse courses on Epidemiology
Show steps
  • Find a workshop on epidemiology that is relevant to your interests.
  • Register for the workshop.
  • Attend the workshop and participate in the activities.
Read the textbook Infectious Diseases: A Clinical Short Course
Reading the textbook will provide you with a comprehensive overview of infectious diseases.
Show steps
  • Purchase or borrow the textbook.
  • Read the textbook, taking notes as you go.
  • Complete the practice problems at the end of each chapter.
Volunteer at a local health clinic
Volunteering at a health clinic will give you hands-on experience in epidemiology and public health.
Browse courses on Epidemiology
Show steps
  • Find a local health clinic that is looking for volunteers.
  • Apply to be a volunteer.
  • Attend the volunteer training.
  • Volunteer at the clinic on a regular basis.
Join a study group for epidemiology
Joining a study group will allow you to collaborate with other students and learn from each other.
Browse courses on Epidemiology
Show steps
  • Find a study group for epidemiology.
  • Attend the study group meetings.
  • Participate in the discussions.
Watch online tutorials on epidemiology
Watching online tutorials will allow you to learn about epidemiology at your own pace and on your own schedule.
Browse courses on Epidemiology
Show steps
  • Find online tutorials on epidemiology.
  • Watch the tutorials.
  • Take notes on the material.

Career center

Learners who complete COVID-19 - A clinical update will develop knowledge and skills that may be useful to these careers:
Data Scientist
A Data Scientist analyzes raw data to extract meaningful insights and trends. This course provides a solid foundation in epidemiology and the spread of infectious diseases, which are essential skills for a Data Scientist working in the healthcare industry. The course also covers statistical modeling and machine learning techniques, which are widely used in data analysis.
Epidemiologist
An Epidemiologist investigates the causes and patterns of diseases in populations. This course provides a comprehensive overview of COVID-19, including its epidemiology, clinical presentation, and management. The course also covers the principles of public health and disease surveillance, which are essential for Epidemiologists.
Infection Preventionist
An Infection Preventionist develops and implements strategies to prevent the spread of infections in healthcare settings. This course provides a deep understanding of the principles of infection control and the management of infectious diseases. The course also covers the latest evidence-based practices for preventing healthcare-associated infections.
Public Health Nurse
A Public Health Nurse promotes the health of communities and populations. This course provides a comprehensive overview of COVID-19, including its epidemiology, clinical presentation, and management. The course also covers the principles of public health and community health nursing, which are essential for Public Health Nurses.
Physician Assistant
A Physician Assistant provides medical care under the supervision of a physician. This course provides a strong foundation in the diagnosis and treatment of COVID-19, as well as other infectious diseases. The course also covers the principles of physical examination and medical history taking, which are essential for Physician Assistants.
Microbiologist
A Microbiologist studies microorganisms and their role in health and disease. This course provides a deep understanding of the biology of viruses, including SARS-CoV-2, the virus that causes COVID-19. The course also covers the principles of molecular biology and virology, which are essential for Microbiologists.
Virologist
A Virologist studies viruses and their role in health and disease. This course provides a deep understanding of the biology of viruses, including SARS-CoV-2, the virus that causes COVID-19. The course also covers the principles of molecular biology and virology, which are essential for Virologists.
Medical Laboratory Scientist
A Medical Laboratory Scientist performs laboratory tests to diagnose and monitor diseases. This course provides a strong foundation in the principles of laboratory medicine and the diagnosis of infectious diseases. The course also covers the latest technologies and techniques used in medical laboratories.
Health Educator
A Health Educator develops and implements programs to promote health and prevent disease. This course provides a comprehensive overview of COVID-19, including its epidemiology, clinical presentation, and management. The course also covers the principles of health education and behavior change, which are essential for Health Educators.
Healthcare Administrator
A Healthcare Administrator manages the operations of healthcare facilities. This course provides a deep understanding of the healthcare system and the challenges faced by healthcare administrators. The course also covers the principles of healthcare finance and management, which are essential for Healthcare Administrators.
Emergency Medical Technician
An Emergency Medical Technician provides emergency medical care to patients. This course provides a strong foundation in the diagnosis and treatment of COVID-19, as well as other medical emergencies. The course also covers the principles of emergency medical care, which are essential for Emergency Medical Technicians.
Pharmacist
A Pharmacist dispenses medications and provides drug information to patients. This course provides a deep understanding of the pharmacology of antiviral medications, including those used to treat COVID-19. The course also covers the principles of pharmacy practice, which are essential for Pharmacists.
Respiratory Therapist
A Respiratory Therapist provides respiratory care to patients with breathing problems. This course provides a strong foundation in the management of respiratory failure, which is a common complication of COVID-19. The course also covers the principles of respiratory therapy, which are essential for Respiratory Therapists.
Medical Writer
A Medical Writer creates written materials about medical topics. This course provides a deep understanding of COVID-19, including its epidemiology, clinical presentation, and management. The course also covers the principles of medical writing, which are essential for Medical Writers.
Health Policy Analyst
A Health Policy Analyst develops and evaluates health policies. This course provides a deep understanding of the healthcare system and the challenges faced by policymakers. The course also covers the principles of health policy analysis, which are essential for Health Policy Analysts.

Reading list

We've selected ten books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in COVID-19 - A clinical update.
Provides a comprehensive overview of the COVID-19 pandemic, from its origins to its global impact. It also offers insights into how we can prevent future pandemics.
This guide provides information on how to protect yourself and your loved ones from COVID-19.
Explores the science of contagion, and how it can be used to understand and control the spread of infectious diseases.
Examines the history of zoonotic diseases, and how they can spill over from animals to humans.
This guide provides information on how to keep students and staff safe from COVID-19.
This guide provides information on how to protect yourself from COVID-19 while traveling.

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