cme pre-training assessment - ndsu
TRANSCRIPT
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CME Pre-Training AssessmentIf you are are seeking 1 credit of CME for participating in this session, PLEASE FOLLOW THE LINK BELOW (also noted in
Zoom chat box), to take the required pre-test. THIS IS NOT REQUIRED for those seeking CPE (pharmacy
continual education credit). CPE information will be available at the end of the presentation.
https://ndstate.co1.qualtrics.com/jfe/form/SV_8dLAkDiM4ldvs5n
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SARS-CoV-2: Virology to Vaccine Paul J Carson, MD, FACP
Professor of Practice, Dept. of Public HealthNorth Dakota State University
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Polling Questions
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34%
25%
17%
9%7%
5%3%
<1%0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
RN, LPN PharmD, RPh Student Other MD, DO PublicHealth
Professional
PA, NP PhD
% o
f Par
ticip
ants
Professional Designation
What is your professional designation? N=244
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49%
13%
38%
0%
10%
20%
30%
40%
50%
60%
70%
Yes No Unsure
% o
f Par
ticip
ants
Participant Answer
PRE-presentation: If the FDA authorized a vaccine to prevent COVID-19 today, at no cost under Emergency Use Authorization, would you agree to be
vaccinated? N=249
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11% 12%
57%
20%
0%
10%
20%
30%
40%
50%
60%
70%
1 SAE per 20,000 1 SAE per 50,000 1 SAE per 100,000 1 SAE per Million
% o
f Par
ticip
ants
Acceptable Rate of SAE
What would be the absolute lowest possible rate of severe adverse events, also referred to as SAE (e.g. an event following vaccination which was life-threatening or requires
hospitalization) in a COVID-19 vaccine that you find acceptable? N=241
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10%
34%
51%
5%0%
10%
20%
30%
40%
50%
60%
70%
the same 2x higher 13x higher 19x higher
% o
f Par
ticip
ants
Relative Risk
What do you think is the relative risk of acute respiratory distress syndrome (ARDS) in a laboratory-confirmed COVID-19 case compared to a patient with influenza? N=247
Correct Answer
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31%
48%
18%
3%
0%
10%
20%
30%
40%
50%
60%
70%
<1% 5% 14% 36%
% o
f Par
ticip
ants
Overall Chance
If someone becomes sick from COVID-19, what do think is their overall chance of being hospitalized? N=252
Correct Answer
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Learning Objectives1. Describe the virology and epidemiology of the SARS-CoV-2 virus.
2. Describe the development, licensure, approval, and possible distribution of the COVID-19 vaccine.
3. Accurately and confidently address patient concerns with the COVID-19 vaccine.
4. Describe North Dakota’s role in planning for the pilot distribution of COVID-19 vaccine.
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What Do We Know About Coronaviruses?Coronaviruses are a large family of viruses -some cause illness in people, and others only infect animals.
Common coronaviruses (NL63, 229E, OC43, HKU1) cause mild upper-respiratory illnesses, like the common cold.
Some coronaviruses infect animals then spread to people, and then spread person to person such as:
Middle East Respiratory Syndrome (MERS)Severe Acute Respiratory Syndrome (SARS)SARS CoV-2 (COVID-19)
Coronaviruses have a crown-like appearance under the microscope
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Drop in share of Americans who say they would get a COVID-19 vaccine if it were available to them today
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Vaccine
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Human Nature: Heuristics and Biases§ Tend to use (less accurate) quick rule of thumb calculations
of risk
§ Do no harm: bad outcome from inaction more tolerable than bad outcome from action
§ Ambiguity: more comfortable with known than unknown risks
§ Availability bias: we conflate things that we remember easier
§ Compression: we overestimate rare risks and underestimate common risks, especially as they become more familiar
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Lost on the Frontline Project
They had an immune system too…
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Excess Mortality over Prior Year Trends – U.S.
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Prevalence of Any Underlying Medical Conditions for Severe COVID-19 Outcomes
Median County Prevalence for Any Medical Condition
47%
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Where Does COVID-19 Fit Amongst Our Pandemic Influenza Outbreaks?COVID
-19
1918pandemic
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Worst Case Scenario?
Total Population x % Susceptible x IFR = Total Mortality
328 million x 50-90% x 0.6% 164-295 million
Total Mortality = 984,000 – 1.8 million
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Aren’t You Just Kicking the Can Down the Road?
VaccinesAnd
Treatments!
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The Odds an American Will…Develop shingles in one’s lifetime
1 in 3
Die of choking on food
1 in 2,696
Die of lightning strike
1 in 161,856
Table taken from:1. LaSalle, G. Let’s Talk Vaccines. Philadelphia: Wolters Kluwer; 2020. 2. Statista. Number of deaths due to choking in the United States from 1945-2018. Available at: https://www.statista.com/statistics/527321/deaths-due-to-choking-in-the-us/
*Based on flu deaths in the United States during the 2017-2018 flu season
Die of flu*1 in 4084
Die of COVID-191 in 300
Develop Guillain-Barre Syndrome or anaphylaxis
from vaccination 1-2 in 1,000,000
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Risk of COVID-19 Infection for Hospitalization or Death
Age Group Hospitalization / 100k
Death / 100k
0-9 50 2
10-19 150 6
20-29 600 30
30-39 1,600 80
40-49 2,500 150
50-59 5,100 600
60-69 8,300 2,200
70-79 12,100 5,100
80+ 13,600 9,300
Adapted from Verity R et al. Lancet Inf Dis, 2020
Anaphylaxis - all vaccines0.1 : 100k
RRV – Intussusception1 : 100k
MMR ITP2.5 : 100k
Yellow Fever Vaccine0.4 : 100k
Smallpox – Encephalitis1.2 : 100,000
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Herd Immunity = 1 – 1/R050% - 67%
% Immune =% Vaccinated x % VE
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Where FDA Has Set the Bar for Efficacy
50%
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Sample Size Needed to Detect an Adverse Event Greater than the Background Rate
Background rate in general population
Rate in Vaccinated Population
5-fold higher 10-fold higher 100-fold higher
1 in 10,000 16,000 5,500 500
1 in 100,000 160,000 53,500 2,500
1 in 1,000,000 1,599,000 532,000 23,500
Evans. J Infect Dis 2009;200:321Assumes 5% risk of Type I error and power of 90%
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Vaccine or Developer
Type of Vaccine
Protects Against Approval Year
Doses Phase II n Phase III n
IPOL Inactivated Polio 2000 4 361 2,358
Daptacel Combination Diphtheria, Tetanus, Pertussis 2002 5 7,471 10,575
Gardasil Subunit HPV 2006 3 4,047 22,938
Prevnar 13 Inactivated Pneumococcal disease 2010 4 1,478 49,296
Moderna/NIH mRNA COVID-19 - 2 600* 30,000Johnson & Johnson Viral vector COVID-19 - 2 394* 60,000
BioNTech/Pfizer mRNA COVID-19 - 2 - 43,000†
*combined phase I and phase II trial†combined phase II and phase III trial
Comparing Clinical Trial Sizes of Vaccine Series
Reference:Weinberg SH, et al. Size of clinical trials and introductory prices of prophylactic vaccine series. Human Vaccines & Immunotherapeutic. 2012;8(8):1066-70.WHO. Draft landscape of COVID-19 candidate vaccines. Available at: https://www.who.int/publications/m/item/draft-landscape-of-covid-19-candidate-vaccines
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I need to see the long-term
results before I’ll take any vaccine!
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§ Ambiguity: more comfortable with known than unknown risks
§ Do no harm: bad outcome from inaction more tolerable than bad outcome from action
§ Compression: overestimate rare risks and underestimate common risks
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Post-Discharge Symptoms at 4 mos
§ Fatigue – 55%
§ Dyspnea – 42%§ Memory loss – 34%
Garrigues E. J Infect – Sept 2020
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Evidence of Myocarditis and Myocardial Injury in Athletes Recovered from COVID-19
§ Assessed 26 athletes from 5 sports after COVID-19 quarantine (11-53 days) with cardiac MRI
§ 73% had been asymptomatic, 27% mild sxs
§ 15% met criteria for myocarditis, additional 31% had LGE T2 elevation (sign of prior myocardial injury)
Rajpal S, et al. JAMA Cardiology, Jul 2020
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Vaccines and Immune Response
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Antibody Responses in Patients with COVID-19 vs Several Controls
Caturegli. Ann Int Med, 2020
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Rapid Decay of Antibody Levels After SARS-CoV-2 Infection
Antibody Half Life= 36 days
Ibarrondo FJ. NEJM 2020
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Declining Ab Levels 8 Weeks After Infection
Long Q. Nature 2020
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Seropositivity in Icelanders 4 mos After Infection
91.1%
N = 1215
Gudbjartsson et al. NEJM 2020
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Antibody vs T-Cell Responses to SARS-CoV-2 in Sweden
12.9%
60.7%
87.1%
100.0%
0.0%
29.0%
92.8%
96.8% 100.0%
0%
20%
40%
60%
80%
100%
2019 BD 2020 BD Exposed Family Mild Illness Severe Illness
Antibodies T-Cells
Sekine T et al. Cell, Aug 2020
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T-Cell Response to Moderna mRNA Vaccine in Rhesus Macaque Monkeys
Good Th1 andInterleukin-21 Response,particularly at higher dose
Corbett KS. NEJM Jul 2020
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Evidence for and Against Durable ImmunityAgainst For
• No durable immunity against 3/4 seasonal coronaviruses (reinfection common)
• Select Ab studies show waning as early as 3-4 mos
• SARS CoV-2 reinfection documented
• Asymptomatic and mild infection mounts lower immune response
• Durable T-cell immunity demonstrated in MERS and SARS CoV-1
• Durable Ab response shown (Iceland –4 mos) when Pan-IgG Abs studied
• Several vaccine candidates shown to induce both B and T-cell responses (including memory T-cells)
• Vaccine and natural infection protective in Rhesus macaques
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https://www.nytimes.com/interactive/2020/science/coronavirus-vaccine-tracker.html
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Vaccines in Phase III
BCG
Sinopharm x 2
Gamaleya
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SARS-CoV-2 Vaccine Strategies
§ mRNA§ DNA§ Replication defective viral vectors§ Replicating viral vectors§ Whole killed virus§ Live attenuated virus§ Purified viral protein
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Vaccines That Use Our Cells to Make the Viral Antigens
§ mRNA§ DNA§ Replication defective viral vectors§ Replicating viral vectors§ Live attenuated virus§ Whole killed virus§ Purified viral protein
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Front-Running Vaccine Platforms That Use Our Cells to Make the Viral Antigens
§ mRNA§ DNA§ Replication defective viral vectors§ Replicating viral vectors§ Live attenuated virus§ Whole killed virus§ Purified viral protein
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mRNA and DNA Vaccine Platforms
§ mRNA§ DNA§ Replication defective viral vectors
§ Replicating viral vectors
§ Whole killed virus
§ Live attenuated virus
§ Purified viral protein
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mRNA Vaccines in Phase III
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Pfizer Update on Phase III Enrollment – Oct 22
§ 37,864 out of planned 44,000 participants – 31,062 have received 2nd dose
Subject Characteristics
Percent of Enrolled Subjects in U.S.
Black 10%Hispanic 13%
Native American 0.8%Asian 5%
Age 56-85 47%
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Pros and Cons of mRNA Vaccine PlatformAdvantages Disadvantages
• Can be produced quickly• Low production cost (vs. protein
vaccines)• No adjuvants• Non-Infectious• Synthesize by in vitro transcription• Free of microbial molecules• Non-integrating (vs. DNA vaccines)• Induction of T and B cell immune
response
• Novel – no approved RNA vaccines, but some clinical testing for other viruses (rabies and influenza)
• Instability of single stranded mRNA• Inflammatory reaction possible• Potential difficulty of intracellular delivery• Development of additional technologies
for storage and administration• Most formulations require deep cold
chain for longevity and stability• Low immunogenicity – require multiple
doses
References: Jeyanathan M, et al. Immunological considerations for COVID-19 vaccine strategies. Nature Reviews Immunology. 2020;20:615-32.Kaur SP, Gupta V. COVID-19 Vaccine: A comprehensive status report. Virus Research. 2020;288:198114.Funk CD, et al. A Snapshot of the Global Race for Vaccines Targeting SARS-CoV-2 and the COVID-19 Pandemic. Front. Pharmacol. 2020;11(937):1-17.
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SARS-CoV-2 Vaccine Strategies
§ mRNA§ DNA§ Replication defective viral vectors
§ Replicating viral vectors
§ Whole killed virus
§ Live attenuated virus
§ Purified viral protein
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SARS-CoV-2 Vaccine Strategies§ mRNA§ DNA§ Replication defective viral
vectors§ Replicating viral vectors§ Whole killed virus§ Live attenuated virus§ Purified viral protein Inovio’s Electroporation
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Pros and Cons of DNA Vaccine PlatformAdvantages Disadvantages
• Can be produced quickly• Low production cost (vs. protein
vaccines)• Long-term stability (vs. mRNA
vaccines)• Non-Infectious• Stimulation of innate immune
response• Cell and Egg Free• Can be used in
immunocompromised subjects
• Novel – no approved FDA vaccines or real world experience in the global population.
• Low Immunogenicity in humans – requires multiple doses
• Potential host genome integration
• Requirement of adjuvant• Some require special tools for
deliveryReferences: Jeyanathan M, et al. Immunological considerations for COVID-19 vaccine strategies. Nature Reviews Immunology. 2020;20:615-32.Kaur SP, Gupta V. COVID-19 Vaccine: A comprehensive status report. Virus Research. 2020;288:198114.Funk CD, et al. A Snapshot of the Global Race for Vaccines Targeting SARS-CoV-2 and the COVID-19 Pandemic. Front. Pharmacol. 2020;11(937):1-17.
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SARS-CoV-2 Vaccine Strategies
§ mRNA§ DNA§ Replication defective viral vectors§ Replicating viral vectors§ Whole killed virus§ Live attenuated virus§ Purified viral protein
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Gamaleya
Replication-Defective Virus Vector Vaccines
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Pros and Cons of Viral Vector VaccinesAdvantages Disadvantages
• Amplify antigen production• More immunogenic – good T-cell• Th1 biased immune response• May only require 1 dose• Refrigeration, not frozen• Track record – fairly safe
• Cross-reactive Ad antibodies may decrease effectiveness
• Ab’s to the Adenovirus may make future booster doses less effective
• Grown in cell-cultures derived from past aborted fetus
References: Jeyanathan M, et al. Immunological considerations for COVID-19 vaccine strategies. Nature Reviews Immunology. 2020;20:615-32.Kaur SP, Gupta V. COVID-19 Vaccine: A comprehensive status report. Virus Research. 2020;288:198114.Funk CD, et al. A Snapshot of the Global Race for Vaccines Targeting SARS-CoV-2 and the COVID-19 Pandemic. Front. Pharmacol. 2020;11(937):1-17.
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SARS-CoV-2 Vaccine Strategies
§ mRNA§ DNA§ Replication defective viral vectors§ Replicating viral vectors§ Whole killed virus§ Live attenuated virus§ Purified viral protein
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SARS-CoV-2 Vaccine Strategies
§ mRNA§ DNA§ Replication defective viral vectors§ Replicating viral vectors§ Whole killed virus§ Live attenuated virus§ Purified viral protein
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Traditional vs Accelerated Vaccine Pipeline
90% Failure Rate§ 50% in Phase III
20-100 100s 1000s
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What’s the “Warp Speed”
20-100 100s 1000s
1 – 2 years
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? What§ Transverse myelitis in UK§ Death in Brazil
§ Trial restarted in U.S.§ Trial restarting in U.S.
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Serious Adverse Events –Transverse Myelitis in Astra-Zeneca Trial
§ Trials aim to enroll ~ “N” about size of Minot
§ Expected incidence 1.3-4.6 per million § 1 every 5 years in city like Minot
§ If include MS, ~ 25/million§ 1 case per year in city like Minot
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Emergency Use Authorization Process
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Vaccine and Related Biological Product Advisory Committee (VRBPAC)
Reference:1. FDA. Vaccines and Related Biological Products Advisory Committee. Available at:
https://www.fda.gov/advisory-committees/blood-vaccines-and-other-biologics/vaccines-and-related-biological-products-advisory-committee
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Comparison of BLA to EUA
BLA• Can take up to a year to
acquire• Multidisciplinary FDA
review team• Inspection of vaccine’s
manufacturing plant• Presented to VRBPAC
EUA• FDA authorization of
unlicensed product• Faster to obtain• Vaccine data will be
reviewed by VRBPAC
Reference:1. Cohen. Here’s how the U.S. could release a COVID-19 vaccine before the
election – and why that scares some. Science. 2020.2. FDA. Vaccine Product Approval Process. Available at:
https://www.fda.gov/vaccines-blood-biologics/development-approval-process-cber/vaccine-product-approval-process
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90% of serious adverse
events are detected in 1st6 weeks after vaccination
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ND Role in CDC Pilot Project§ 1 of 4 states chosen to be part of pilot project
• Partnership with CDC/DOD
§ Plan for distribution of COVID-19 vaccine• NOT a vaccine clinical trial
§ North Dakota chosen for:• Rural nature• Tribal relationships
https://www.health.nd.gov/news/north-dakota-selected-cdc-pilot-project-covid-19-vaccine-planning#:~:text=The%20North%20Dakota%20Department%20of,is%20not%20a%20vaccine%20trial.
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ND Goals in CDC Pilot Project§ Vaccine shipment to North Dakota
§ How to safely and effectively transport, store, and distribute vaccine within the state• Temperature: thermostability• Administration: multidose vials
§ Tracking distribution
§ Who administers vaccinehttps://www.health.nd.gov/news/north-dakota-selected-cdc-pilot-project-covid-19-vaccine-planning#:~:text=The%20North%20Dakota%20Department%20of,is%20not%20a%20vaccine%20trial.
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HCW68,864
Increased Risk551,979
Essential Works33,950
Estimates of Priority Groups in ND
Reference: NDDoH. North Dakota COVID Vaccination Plan. Version 1.2. Updated 10/16/2020.
Possible groups for Phase 1
Stage Priority PopulationsPhase 1A
HCWLTC providers & residentsDirect care public health workers
Phase 1B
TribesHigh priority infrastructureAncillary HCWHigh Risk Med ConditionsAdults ≥65yoa
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CME Post-Training AssessmentIf you are are seeking 1 credit of CME for participating in this session, PLEASE FOLLOW THE LINK BELOW (also noted in Zoom chat box), to take the required post-test & evaluation.
THIS IS NOT REQUIRED for those seeking CPE (pharmacy continual education credit). CPE information in next slide.
https://ndstate.co1.qualtrics.com/jfe/form/SV_0OioNehunRjs9yB
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Obtaining CPE Credit for PharmacistsContinuing Pharmacy Education (CPE) for
SARS-COV-2: Virology to Vaccine, what YOU need to know! Has been accredited by
Ceimpact, an ACPE-accredited provider of continuing pharmacy education.
Although you attended the live session, you MUST complete the online requirements to obtain your CPE Credit (link in chat box).
The deadline for obtaining your CPE credit is:November 28, 2020
This deadline is non-negotiable due to the CPE Monitoring reporting timelines.
*If this is the first time you have utilized the Ceimpact Learning Management System (LMS)
you will need to create an account.
Questions? [email protected]
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Polling Questions
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67%
9%
24%
0%
10%
20%
30%
40%
50%
60%
70%
Yes No Unsure
% o
f Par
ticip
ants
Participant Answer
POST-presentation: If the FDA authorized a vaccine to prevent COVID-19 today, at no cost under Emergency Use Authorization, would you agree to be
vaccinated? N=362
An 18% increase in “yes” from pre-presentation
response
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49%
13%
38%
67%
9%
24%
0%
10%
20%
30%
40%
50%
60%
70%
Yes No Unsure
% o
f Par
ticip
ants
Participant Answer
Comparison of Pre and Post-Presentation Response: If the FDA authorized a vaccine to prevent COVID-19 today, at no cost under Emergency Use
Authorization, would you agree to be vaccinated? N=362
% of Participants Pre-Presentation% of Participants Post-PresentationAn 18% increase in “yes”
from pre-presentation response