Why wearing a mask is necessary for vaccinated people.
                     WHY 
WEARING 
A MASK IS 
NECESSAR
Y FOR 
VACCINAT
ED 
PEOPLE
INTRODUCTION
• Pfizer and Moderna's latest COVID-
19 vaccines appear to be 
exceptionally effective at avoiding 
severe illness. 
• But how far they're going to curb 
the transmission of the coronavirus 
is unknown. 
Source: Pinterest
INFECTION
• The Pfizer and Moderna trials 
tracked just how many vaccinated 
individuals got ill with COVID-19. 
• This leaves open the possibility of 
infecting certain vaccinated 
individuals without developing 
symptoms and then being able to 
spread the virus silently, especially 
if they come into close contact with 
others or avoid wearing masks.
Source: Pinterest
WEARING MASK
• A lot of people think that they will 
no longer have to wear masks once 
they get vaccinated.
• To know if they have to keep 
wearing masks, it's really going to 
be critical for them, because they 
could still be contagious.
Source: similarpng.com
HOW VIRUS ENTER?
• The nose is the major port of entry for most 
respiratory infections, including the latest 
coronavirus. 
• There the virus quickly multiplies, jolting the 
immune system to generate a type of mucosa-
specific antibodies, the wet tissue that lines 
the nose, mouth, lungs and stomach. Those 
antibodies, as well as immune cells.
• The virus, immediately shut down the virus in 
the nose if the same person is exposed to the 
virus a second time, before it has a chance to 
take root elsewhere in the body.
Source: nguyenloi.co
ARE VACCINATED PEOPLE 
SAFE?
• In comparison, coronavirus 
vaccines are administered deep 
into the tissues and rapidly 
ingested into the blood, where they 
induce the production of antibodies 
by the immune system. 
•This tends to be ample security to 
prevent the vaccinated individual 
from becoming sick. 
Source: http://clipart-library.com
HOW LONG 
ANTIBODIES 
WORK?
• Any of these antibodies can 
circulate there to the nasal mucosa 
and stand watch, but it is not known 
how far or how rapidly the antibody 
reservoir will be mobilised. 
•If the response is not many, then 
viruses could bloom in the nose and 
infect others by sneezing or 
breathing out.
Source: 
indianexpress.com
IMMUNE SYSTEM
• It depends on whether the virus 
can replicate more quickly or 
whether it can be controlled more 
quickly by the immune system.
•This is why mucosal vaccines, such 
as the FluMist nasal spray or oral 
polio vaccine, are effective at 
fending off respiratory viruses than 
intramuscular injections. 
Source: 
www.istockphoto.com
NEXT GENERATION 
OF VACCINES
• The next generation of vaccines 
against coronavirus may yield 
immunity in the nose and the rest of 
the respiratory tract, where it is 
most required. 
•Or an intramuscular injection 
accompanied by a mucosal aid that 
creates defensive antibodies in the 
nose and throat may be offered to 
people. 
Source: 
medicalxpress.com
EFFECTIVENESS OF 
COVID-19 VACCINES
•The coronavirus vaccines have 
proven to be effective shields 
against serious disease, but there 
is no guarantee of their 
effectiveness in the nose. 
•The lungs, the site of extreme 
symptoms, are much more open 
than the nose or throat to 
circulating antibodies, making it 
possible to protect them.
Source: 
expresspharma.com
PREVENTION 
OF COVID-19
•It is the simplest way to avoid 
major diseases, the hardest way to 
prevent moderate diseases, and 
the hardest way to prevent all 
infections
• If it is 95% effective in the 
prevention of symptomatic illness, 
it would definitely be anything less 
than that in the prevention of all 
diseases.
Source: freepik.com