4. SARS-CoV-2: Incubation
Period
► The incubation period is the time from when
someone is infected until symptoms develop
► The SARS-CoV-2 incubation
period ranges from 2 to 14
days
►50% of people will become
ill by 5 days AFTER they are
infected
Onset of symptoms
Image adapted by Center for Teaching and Learning, Johns Hopkins Bloomberg School of Public Health, from:
Bi, Q., et al. (2020). Epidemiology and transmission of COVID-19 in Shenzhen China: analysis of 391 cases and 1,286
of their close contacts [medRxiv preprint]. Infectious Diseases (except HIV/AIDS).
5. SARS-CoV-2: Onset of
Infectiousness
►People become infectious
about 2 days BEFORE
symptom onset
►About 50% of people
infected will become
infectious 3 days AFTER
they are infected
Onset of infectiousness
Image adapted by Center for Teaching and Learning, Johns Hopkins Bloomberg School of Public Health,from:
Bi, Q., et al. (2020). Epidemiology and transmission of COVID-19 in Shenzhen China: analysis of 391 cases and 1,286 of their close contacts [medRxiv
preprint]. Infectious Diseases (except HIV/AIDS). https://doi.org/10.1101/2020.03.03.20028423
6. SARS-CoV-2: Infectiousness Over Time
► Onset of infectiousness
is, on average, 3 days
AFTER infection
► Duration of
infectiousness is about
8 to 9 days after illness
onset (but can be longer
for those who are
severely ill)
► Asymptomatic people
likely have a similar
duration of
infectiousness (but are
less infectious than
people who develop
Image source: Center for Teaching and Learning, Johns Hopkins Bloomberg School of 6
Infectiousness PEAKS
around time of onset of
symptoms
8. IN PUBLIC HEALTH, CONTACT TRACINGis
•the process of identification of persons who may have
come into contact with an infected person ("contacts”) and
subsequent collection of further information about these
contacts
by TRACING the contacts of infected individuals, TESTING them
for infection, TREATING the infected and tracing their contacts in
turn, public health aims to REDUCE INFECTIONS in the population
9. 1. Household Contact
2. Work Colleagues/Clients
3. Friends
MODE OF CONTACT
with high risk of infection
• No Face Mask
• Loud Talking
• Eating Together
• Loud Singing
• Drinking Session
10. 1.WEAR MASK PROPERLY
2.WATCH YOUR DISTANCE
3.WASH HANDS BEFORE
touching your eyes, nose
and mouth
4.Regular GARGLING
before sleeping
11. BUBBLE EXISTENCE
1.TREAT yourself as infectious
• WEAR MASK PROPERLY
• WATCH YOUR DISTANCE
• WASH HANDS BEFORE touching your eyes, nose and mouth
2.Observe SELF-ISOLATION at HOME
• Avoid physical encounter with your family members
• Wear mask always
• Monitor your health
• Wash your own utensils after eating your meal / avoid eating
meals together with your family
12. The Whole of Home-and-School Approach
against COVID-19
Limited Face-To-Face Back to School Protocols
13. The Whole of Home-and-School
Approach against COVID-19
Limited Face-To-Face Classroom Protocols
The entire school community must
understand the science of COVID-19
and the enhanced minimum health
protocols before the face-to-face
classes starts
14. The Whole of Home-and-School
Approach against COVID-19
Limited Face-To-Face Classroom Protocols
Household of students and the
schools must develop protocols
that are consistent with the
science of COVID-19.
15. All school faculty, staff and students
must establish their respective
HOME ISOLATION PROTOCOLS
before the classes starts
The Whole of Home-and-School Approach
against COVID-19
Limited Face-To-Face Back to School Protocols
16. Behavior development to co-exist
with covid-19 is a must to the entire
school community
The Whole of Home-and-School Approach
against COVID-19
Limited Face-To-Face Back to School Protocols
17. School Health Marshalls must be established
• Protocol officers
• Contact Tracers
• COVID-19 hotline for home care
management
The Whole of Home-and-School Approach
against COVID-19
Limited Face-To-Face Back to School Protocols
18. WORK
HEALTH MONITORING
SYMPTOMATIC ASYMPTOMATIC
TEST-TRACE-TREAT-ISOLATE TEST-TRACE-BUBBLE EXIST-WORK
HEALTH CLEARANCE
WORK 1. INFORMED-VACCINATED WORKERS
2. COVID-19 HEALTH TEAM
3. COMPANY ISOLATION FACILITY
4. HR COVID-19 POLICY
the behavior of the people
which decides the course of
this pandemic....
