Please see the link below.

https://www.inquirer.com/philly-tips/covid-vaccine-coronavirus-mask-vaccinated-efficacy-20201216.html

Dear Dr. Ahmed!

You raised an important point. One must be able to evaluate the risk of exposuring to COVID-19 as the pandemic evolved toward the third wave:

Michael Eisenstein (2021). What’s your risk of catching COVID? These tools help you to find out - A look at apps that predict the chance of infection and illness depending on what you’re doing and where you are. TECHNOLOGY FEATURE

21 December 2020 Nature 589, 158-159 (2021) Citation: "The 19 and Me calculator, developed by Mathematica, a policy-research company in Princeton, New Jersey, draws on demographic and health information as well as user behaviours such as hand washing and mask use to determine relative risk of exposure, infection and serious illness. " Open Access:

https://www.nature.com/articles/d41586-020-03637-y

A case of application: Enahoro A. Iboi et al. (2020). Will an imperfect vaccine curtail the COVID-19 pandemic in the U.S.? Infectious Disease Modelling

Volume 5, 2020, Pages 510-524 Open Access:

Article Will an imperfect vaccine curtail the COVID-19 pandemic in the U.S.?

Yours sincerely, Bulcsu Szekely

Thanks Dr. Arvind singh and Dr.Bulcsu Szekely for valuable answer

Wear a mask is to stop the spreading of this virus, which means breaking the chain of spreading. It has no relation to the vaccine.

Because you will be infected a second time, and this is certain, but the symptoms of infection will not last for more than 24 hours, but will strengthen and perpetuate your immunity. I am talking about my experience after injury and recovery from it and not after the vaccination, but wearing a mask is a good habit that must be adhered to in crowded places and during close dialogue with people you think are infected

Because the virus is constantly changing.

Agree with M.K. Tripathi

Wearing mask must be used to get prevent to catch the illness. On the other hand, we do not know when and how the current pandamy would be finished and also it has not been exactly confirmed or specified effectiveness and efficacy of the made vaccines in the world, yet. In fact, the clinical and human trials along with an international large/wide statistical society would be confirm that.

Coronavirus vaccines are strong shields against severe symptoms and repercussions, the new Corona virus

I expect many people will be asking the same question. I will abide with the latest advice given and adhere to whatever rules we are all expected to follow on this one.

For more protection. The vaccine will protect you from getting ill and then ending up hospitalized. But it's possible that you could still carry the virus and be contagious to others. So those who get the vaccine should still be wearing masks and practicing physical distancing.

please have a look at the following link

https://www.nytimes.com/2020/12/08/health/covid-vaccine-mask.html

Good responses above from Prof Lamia Mustafa Al-Naama; worth reading the NY Times link. We are building on our knowledge as time goes on. Also the link from Dr Arvind Singh from the Philadelphia Inquirer. These are situations that we have never been in before.

Wearing Mask is compulsory as the virus have many strains.

Wear a mask is like a shield that will protect you and others from spreading the virus if they got infected.

The COVID vaccine reduces the risk of COVID. Wearing masks reduces transmission of many respiratory pathogens.