The COVID-19 pandemic is impacting the global population in drastic ways. In many countries, older people are facing the most threats and challenges at this time. Although all age groups are at risk of contracting COVID-19, older people face a significant risk of developing severe illness if they contract the disease due to physiological changes that come with aging and potential underlying health conditions. Initial research in China based on over 44,000 cases of Covid-19, showed a mortality rate of 2.3% for the general population, rising to 8% in those aged 70-79 and nearly 15% in those 80 and over.
So how to protect the elderly persons from this deadly viral infection?
Prevention, prevention, and prevention for COVID-19 infection
To keep elders at home (grandparents) protected from COVID-19, every younger member of the family should avoid contracting infection from outside by social distancing, masking when outside', minimize venturing out, and washing hands often particularly when coming back to home.
A protocol dedicated to the elderly person against COVID-19: they are considered the most vulnerable segment of the population! Wearing a mask, social distancing of 1 meter and above all, it is necessary to build a database of people of 3 and 4 th ages so that the intervention of health structures will be rapid for the next pandemic
They have weak immune system as compared to younger people so, provide them nutritious food (including with vitamin C) and basic supplies. Stop their medication related with ACE inhibitors and find out alternatives. Tell them to keep social distancing atleast 6-8 feet. Provide them other facilities for relaxing themselves, because stress also causes weak immune system, which provokes more vulnerable to getting infection.
You can notice this research, which gives a good answer to your questions, which is entitled:
How to Protect Older People From the Coronavirus?
https://www.nytimes.com/2020/03/14/health/coronavirus-elderly-protection.html
Talha Bin Emran
Keeping them away from gatherings, and it is preferable for them to stay at home while sterilizing all the tools and clothes they use, and not touching others.
Now vaccination is the best way to protect elderly people from SARS-CoV-2 infection.