Currently, there is no such instruction. One can take one’s regular medication uninterruptedly. Just inform the vaccinator about the medicines you consume.
Yes, persons with one or more of these comorbid conditions are considered among the high risk category. They need to get COVID-19 vaccination. Overall, the vaccine is safe and efficacious in adults with comorbidity. The maximum benefit of getting the COVID-19 vaccine is for those who have such comorbidities. However, if you are concerned for any specific reason, please consult your doctor.
There are a few bleeding disorders like ‘haemophilia’. These persons should take the vaccine under the supervision of their treating physician. Patients who are admitted in hospital or ICU and have bleeding problems should delay the vaccination till they are discharged. However, several people with heart and brain disorders are on blood thinners like aspirin and antiplatelet drugs. They can continue with their medicines and have the vaccines. For them, vaccines are absolutely safe.
The manufacturer’s information for these vaccines contains no information on interactions with other vaccines.
Regulatory bodies suggest that interference between inactivated vaccines with different antigenic content is likely to be limited. Therefore, based on experience with other vaccines, any potential problem is most likely to result in a slightly attenuated immune response to one of the vaccines. When administering more than one vaccine at the same time there is no evidence of any safety concerns but it becomes difficult to attribute any adverse effects to any particular product.
The Union Ministry of Health and Family Welfare accepted the recommendations by the National Expert Group on Vaccine Administration for COVID-19 (NEGVAC) on 19/05/2021. It states that in all COVID-19 patients who have been given anti-SARS-2 monoclonal antibodies or convalescent plasma, the COVID-19 vaccination should be deferred by 3 months from the date of discharge from the hospital.
Individuals with previous allergy to a medicine (where the trigger has been identified), including anaphylaxis, can receive the COVID-19 vaccines.
People with hypersensitivity to nonsteroidal anti-inflammatory drugs e.g. aspirin or ibuprofen, can also receive the COVID-19 vaccines.