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01
General questions
COVID-19 vaccines and vaccination explained – Introduction
432
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0
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14/4/2021
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01
General questions
Vaccines protect against severe COVID-19 disease.
375
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3
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25/4/2022
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01
General questions
Why are some vaccinated people also hospitalized with COVID-19?
1832
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4
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25/4/2022
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0
Experts opinion series
Are vaccines against COVID-19 equal or different?
1567
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2
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2/5/2021
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0
Experts opinion series
Can you be fully vaccinated against COVID-19 and get infected?
367
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4
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11/10/2021
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0
Experts opinion series
The paradox of vaccination success and opposition to vaccination.
390
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2
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1/11/2021
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0
Experts opinion series
How does COVID-19 pandemic influenced vaccine value perception?
59
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1/11/2021
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0
Experts opinion series
How can we deal with vaccine hesitancy?
149
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1
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1/11/2021
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0
Experts opinion series
Safety of vaccines: a question of understanding risks and statistics.
174
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1
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1/11/2021
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0
Experts opinion series
Will we need further COVID-19 vaccine doses?
315
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1
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1/11/2021
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0
Experts opinion series
What important lesson should we have learned from this pandemic for future pandemics?
94
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1/11/2021
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01
General questions
How could vaccines be developed at record speed while still maintaining quality and safety?
261
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14/4/2021
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01
General questions
What are clinical trials and are they enough to prove a vaccine is safe?
127
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23/5/2022
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01
General questions
How do mRNA vaccines, like Pfizer-BioNTech and Moderna COVID-19 vaccines, work?
534
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3
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14/4/2021
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01
General questions
How do vector vaccines work?
202
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14/4/2021
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01
General questions
How should we respond to claims that the mRNA vaccines could cause a genetic change and that we will see this in the coming decades?
143
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2
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29/6/2021
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01
General questions
How do inactivated vaccines work?
1288
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6
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14/4/2021
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01
General questions
How do protein-based vaccines work?
1945
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20
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14/4/2021
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01
General questions
How do I know which COVID-19 vaccine to choose or recommend?
313
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14/4/2021
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01
General questions
What tests or examinations should people get before COVID-19 vaccination?
278
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14/4/2021
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01
General questions
Why should older adults get vaccinated?
105
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1
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11/2/2022
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01
General questions
Can a new variant of the SARS-CoV-2 virus cause more severe disease?
71
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1
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26/11/2021
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01
General questions
Omicron is generally less severe than previous variants – does it still make sense to vaccinate children?
133
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2
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11/2/2022
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01
General questions
Should children aged 5-11 get a booster dose?
14
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23/5/2022
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01
General questions
If COVID-19 becomes endemic will vaccination still be needed?
134
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7/4/2022
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02
Vaccines and infection
Can people still get COVID-19 after being vaccinated?
680
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10
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17/12/2021
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02
Vaccines and infection
How much immunization will be needed to reach herd immunity?
120
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17/12/2021
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02
Vaccines and infection
Given this virus' characteristics, is it realistic to expect a universal vaccine, instead of an annual one, like the flu vaccine?
45
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14/4/2021
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02
Vaccines and infection
What will happen if the vaccines are no longer effective against the new variants?
51
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14/4/2021
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03
Vaccine efficacy and duration of protection
How quickly does the vaccine work and how long does the protection last?
346
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3
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17/12/2021
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02
Vaccines and infection
How can we ever get back to normal life if the virus mutates faster than scientists can adjust the vaccine?
37
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1
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14/4/2021
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03
Vaccine efficacy and duration of protection
Will vaccines be able to eliminate or eradicate COVID-19?
116
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14/4/2021
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03
Vaccine efficacy and duration of protection
If an individual did not develop high antibody titers after vaccination, should he/she be vaccinated again with another vaccine? Is it safe? What should be an interval between two vaccinations?
108
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0
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14/4/2021
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03
Vaccine efficacy and duration of protection
Is a COVID-19 booster shot needed?
38
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23/5/2022
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03
Vaccine efficacy and duration of protection
Are COVID-19 vaccines effective against new variants of concern of the SARS-CoV-2 virus?
92
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0
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17/12/2021
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03
Vaccine efficacy and duration of protection
To what extent can vaccines prevent people from getting infected with COVID-19?
84
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1
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20/9/2021
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03
Vaccine efficacy and duration of protection
Why are some vaccinated people getting sick with COVID-19 and in some cases being hospitalized?
467
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3
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26/11/2021
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03
Vaccine efficacy and duration of protection
Why do immunocompromised people need an additional dose of COVID-19 vaccines?
39
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0
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26/11/2021
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03
Vaccine efficacy and duration of protection
Why has Omicron been designated a variant of concern, and can it affect people who are already vaccinated?
72
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18/1/2022
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03
Vaccine efficacy and duration of protection
Will variant-specific vaccines be needed in the near future?
29
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1
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18/1/2022
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03
Vaccine efficacy and duration of protection
Is the immunity that the current COVID-19 vaccines provide waning over time?
81
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3
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11/2/2022
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03
Vaccine efficacy and duration of protection
Does vaccination prevent long COVID?
142
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0
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7/4/2022
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03
Vaccine efficacy and duration of protection
When should a person be considered fully vaccinated?
96
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1
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7/4/2022
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04
Co-administration, dose-interval and interchangeability
Can a person receive different vaccines for the first, second and/or booster doses?
163
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3
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•
17/12/2021
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03
Vaccine efficacy and duration of protection
Are COVID-19 vaccines effective against Omicron subvariant BA.2?
103
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0
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7/4/2022
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05
Safety
How are we going to monitor vaccine safety?
54
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0
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14/4/2021
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04
Co-administration, dose-interval and interchangeability
Can COVID-19 and influenza (or other) vaccines be administered to a person during the same visit?
350
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5
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26/11/2021
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05
Safety
Are adverse effects observed significantly higher following the second dose (or booster doses) as opposed to the first dose for the mRNA vaccines?
68
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0
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18/1/2022
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05
Safety
Should a person who was previously infected with COVID-19 still be vaccinated?
5860
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40
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17/12/2021
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05
Safety
Can COVID-19 vaccination affect fertility?
96
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0
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14/4/2021
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05
Safety
Under what circumstances should a COVID-19 vaccine be recalled?
61
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0
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14/4/2021
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05
Safety
Why children were not initially included in clinical trials?
17
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1
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7/4/2022
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05
Safety
What happens if a serious side effect is reported?
44
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14/4/2021
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05
Safety
Do mRNA vaccines cause myocarditis as an adverse reaction?
3889
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46
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20/9/2021
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05
Safety
What do WHO and EMA mean when they say the benefits outweigh the risks of vaccination?
69
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14/4/2021
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05
Safety
Why have some women experienced changes to their menstrual cycle following COVID-19 vaccination and can this affect fertility?
77
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0
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23/5/2022
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05
Safety
Can COVID-19 vaccination during pregnancy cause birth defects?
687
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1
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26/11/2021
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05
Safety
Can COVID-19 vaccination lead to impotence?
134
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0
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26/11/2021
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05
Safety
Is there a limit to the number of vaccine doses a person can safely receive?
2644
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29
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18/1/2022
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05
Safety
Could there be as yet unidentified side effects of the vaccines?
9398
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45
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26/11/2021
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05
Safety
Is it safe to vaccinate older adults who have chronic medical conditions (such as diabetes or hypertension)?
222
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4
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•
11/2/2022
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05
Safety
Do the COVID-19 vaccines weaken the immune system?
78
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1
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7/4/2022
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05
Safety
Can COVID-19 vaccines cause AIDS?
376
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2
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7/4/2022
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05
Safety
Why are some countries vaccinating children?
39
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0
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7/4/2022
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06
Precautions and contraindications
Can people with allergies be vaccinated with mRNA vaccines?
217
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3
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18/1/2022
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06
Precautions and contraindications
Should a person who experienced an allergic reaction to the 1st dose of COVID-19 vaccine receive a second dose?
299
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5
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•
18/1/2022
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06
Precautions and contraindications
Can immunocompromised people be vaccinated?
868
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12
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17/12/2021
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06
Precautions and contraindications
Can approved COVID-19 vaccines be administered to people with coagulant disorders or chronic treatment with anticoagulants?
259
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4
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17/12/2021
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06
Precautions and contraindications
Is there a maximum age for vaccination?
100
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29/6/2021
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06
Precautions and contraindications
Can breastfeeding women be vaccinated?
46
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0
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18/1/2022
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06
Precautions and contraindications
When should a woman planning to get pregnant be vaccinated?
91
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1
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14/4/2021
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06
Precautions and contraindications
Are there any chronic hematological diseases that would be a contraindication for COVID-19 vaccination?
56
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1
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18/1/2022
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06
Precautions and contraindications
I am using a hormonal contraception method (oral contraceptives, subdermal implant, skin patches or vaginal ring): should I discontinue this treatment before or after receiving AstraZeneca vaccines?
187
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14/4/2021
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06
Precautions and contraindications
I have had a blood clot in the past or I have a family history of blood clotting. Should I still get vaccinated against COVID-19?
135
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14/4/2021
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07
Access, allocation and deployment
To stop the pandemic, wouldn’t it be better to give the first available doses to those most at risk of transmitting the disease rather than to those most at risk of serious infection?
10
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14/4/2021
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07
Access, allocation and deployment
Who should receive COVID-19 vaccination first in the situation of limited vaccine supply?
7
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14/4/2021
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08
Regulatory approvals
What does emergency use authorization mean?
135
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0
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29/6/2021
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08
Regulatory approvals
Is it safe for children to be vaccinated against COVID-19?
3
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0
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23/5/2022
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08
Regulatory approvals
Some COVID-19 vaccines in use have not been approved by WHO. Are they safe and effective?
63
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29/6/2021
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09
Comirnaty® – Pfizer-BioNTech vaccine
What adverse reactions are associated with the Pfizer-BioNTech mRNA vaccine?
273
Views
•
2
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•
26/11/2021
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10
mRNA-1273 – Moderna vaccine
What adverse reactions are associated with Moderna’s mRNA-1273 vaccine?
515
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5
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26/11/2021
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11
Vaxzevria – Oxford-AstraZeneca vaccine
Is Vaxzevria, the Oxford-AstraZeneca vaccine, safe?
1068
Views
•
7
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•
17/12/2021
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11
Vaxzevria – Oxford-AstraZeneca vaccine
How does Vaxzevria, the Oxford-AstraZeneca COVID-19 vaccine work?
3149
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10
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•
14/4/2021
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11
Vaxzevria – Oxford-AstraZeneca vaccine
Were there any underlying conditions or risk factors in the individuals who suffered from Thrombosis with Thrombocytopenia Syndrome (TTS) after AstraZeneca (Vaxzevria) vaccination?
68
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0
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14/4/2021
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11
Vaxzevria – Oxford-AstraZeneca vaccine
I have received the AstraZeneca vaccine and I have a headache, should I urgently consult my doctor?
94
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0
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14/4/2021
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11
Vaxzevria – Oxford-AstraZeneca vaccine
What are the early signals of potential blood clotting events following immunization that people should be aware of?
1924
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19
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14/4/2021
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11
Vaxzevria – Oxford-AstraZeneca vaccine
If AstraZeneca (Vaxzevria) vaccination can potentially be linked to rare blood clotting events, is it better to wait to be vaccinated against COVID-19 until another vaccine is available?
505
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5
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•
17/12/2021
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11
Vaxzevria – Oxford-AstraZeneca vaccine
What is Vaccine-Induced Thrombosis with Thrombocytopenia Syndrome (TTS)?
445
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2
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14/4/2021
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12
Janssen COVID-19 Vaccine (Johnson & Johnson)
How does the Janssen COVID-19 vaccine work?
1012
Views
•
4
Likes
•
29/6/2021
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12
Janssen COVID-19 Vaccine (Johnson & Johnson)
How many doses of Janssen COVID-19 vaccine do I need to be protected?
2923
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17
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17/12/2021
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12
Janssen COVID-19 Vaccine (Johnson & Johnson)
Is Janssen COVID-19 vaccine safe and efficacious to use in people 18 years and older?
118
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•
0
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•
29/6/2021
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12
Janssen COVID-19 Vaccine (Johnson & Johnson)
What are the most frequent and rare adverse reactions associated with the use of Janssen COVID-19 vaccine?
501
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6
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17/12/2021
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13
Nuvaxovid / Covovax – Novavax vaccine
Is Novavax vaccine safe and effective?
19058
Views
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144
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•
11/2/2022
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