covid tracing

Question 1

Contact tracing for COVID- preventing.

Answer 1

Learning objective: Describe what contact tracing is and how it stops transmission of SARS-CoV2.
Define a case of covid-19 and a contact.
Explain the meaning and purpose of isolation and quarantine.
Describe the connection between the infectious period and isolation and quarantine
Identify High-Risk settings for transmission that requires extra action,

Question 2

A case of covid-19 requires action.

Answer 2

Diagnosing a case of covid-19 is important because we have to act.
Support the person who is infected.
Ensure they have access to medical care social services (offer treatment)
Limit their contact with other people.

Identifty people who may have been infected.
Notify them about their exposure and offer social services (offer treatment)
Limit their contact with other people.

Question 3

Public health prevention for covid-19

Answer 3

Idea: If we can limit contact between people who are infected and others, we can limit the opportunies for the virus to be transmitted.

Question 4

Isolation and quarantine can have a big impact on reducing transmission

Answer 4

Stopping one transmission chain can prevent many future cases.

Question 5

Defining case

Answer 5

Someone who has covid-19.
Usually has a positive laboratory test.

Question 6

Suspect or probable case

Answer 6

Someone exposed to a case (covid-19) who develops symptoms, even if they have not had a test yet.

Question 7

Contact

Answer 7

Someone who had contact with a case while they were infectious.
During their illness.
2 days before their illness began,

Question 8

Three types of contact.

Answer 8

Next card.

Question 9

Physical contact

Answer 9

Shaking hands, hugging, any close direct contact.

Question 10

Close contact

Answer 10

Within 6 ft for 15+ minutes .

Question 11

Proximate contact

Answer 11

More than 6 ft but in the same room for an extended period.

Question 12

Cohorting

Answer 12

Is when a group of students are kept together with the same peers and staff throughout the school day to reduce the risk for spread throughout the school.

Question 13

The physical distancing guidance varies depending on age group:

Answer 13

In elementary schools where all students are wearing masks, a student is considered a contact if they have been within 3 feet of a case for 15 minutes or more.

Question 14

Middle school/High schools.

Answer 14

In middle and high schools, a student is a contact if they have been within 3 feet of a case for 15 minutes or more if all students are using masks and the school is using “cohorting

Question 15

Dynamics

Answer 15

COVID-19 transmission dynamics are different in older students – they are more likely to be exposed to SARS-CoV-2 and spread it than younger children.

Question 16

Problems with not using cohorting.

Answer 16

In middle and high schools that are not using cohorting, a student is considered a contact if they are within 6 feet of a case for a total of 15 minutes or more within a 24 hour time period.

Question 17

What if students are unmasked, like during lunch and recess.

Answer 17

However, when students are unmasked, such as at lunch, they must maintain a distance of 6 feet. Other situations that require 6 feet of physical distancing include:

Question 18

1

Answer 18

Between adults in the school building and between adults and students.

Question 19

2

Answer 19

In common areas, such as school lobbies and auditoriums.

Question 20

3

Answer 20

When masks can’t be worn, such as when eating.

Question 21

5

Answer 21

During activities when heavier breathing occurs. Examples of this include singing, shouting, band practice, sports, or exercise.

Question 22

6

Answer 22

In community settings outside of the classroom

Question 23

What happens when a student or adult has been within 6ft of a case for 15 minutes or more?

Answer 23

If a student or adult has been within 6 feet of a case for 15 minutes or more in any of the above-described scenarios, they are considered a contact.

Question 24

Isolation vs Quaratine.

Answer 24

Next

Question 25

Isolation?

Answer 25

Keep sick people separate from healthy people. Restricted to home or hotel. Seperate place in hospitals to limit contact. For duration of infectiousness: 2 days before onset At least ten days after the onset of illness; must have symptoms improve and no fever (witin 24 hour period)

Question 26

Quarantine?

Answer 26

Restricts movement and contact of healthy people who have been exposed For ten days since the last contact with the person who is infected.

Question 27

How long should a case be isolated from others

Answer 27

Ideally, as long as they're infected, they should be isolated no matter what.

Question 28

Longer answer:

Answer 28

Until they fully recover (and follow intervention) By the time they're diagnosed, they will already be sick. Must moniter their symptoms. Are no longer infectious after they recover. *At least 10 days after the onset of symptoms, and if other symptoms have been improving.

Question 29

Defining their infectious period: Call the case

Answer 29

Lets assume that you've called the case on may 10th. They tell you that they've been infected on may 9th, just one day prior to being ill. You know they've been infectious for about 2 days prior to getting ill, and will be infectious for about 10 days after their onset of illness.

Question 30

Defining their infectious period (follow-up).

Answer 30

The case will need ongoing follow-up to really know when they can stop isolating from others. Need to know when symptoms resolve (without medication)

Question 31

Identity contact during their infectious period

Answer 31

Let us assume they do fully recover by may 19th. Now that you know their infectious period, you can help them identify their contacts. You call them on may 10th You ask them about contacts they had from may 7 to may 10

Question 32

Follow up

Answer 32

When you first talk to the case, it’s important to identify when their infectious period started, so that you can ask about their contacts. You will ask about the two days before they became ill, through the day that you’re talking to them.

Question 33

Scenario

Answer 33

So, in a different scenario, if you called them on the 13th, you would ask about their contacts from May 7th, through May 13th

Question 34

How long should a contact stay in quarantine

Answer 34

Ideally, as long as they could get infectious

Question 35

Longer answer.

Answer 35

10 days following the last contact with someone who is infectious The majority of people infected will develop illness within 10 days Last contact may have been many days ago. Contact may be ongoing. If they have developed symptoms, they should be considered case.

Question 36

How long should a contact stay in quarantine for?

Answer 36

A contact should stay in quarantine for the 10 days following the last contact with someone who was infectious.

Question 37

How long should a contact stay in quarantine for? (ten days since last exposure)

Answer 37

Lets assume you make a call to a contact on may 13th. From the call, you understand that their last contact with the case was on may 10th So, they should recieve instructions to quarantine for 10 days since that last exposure

Question 38

Contacts who live with cases may need to quarantine longer.

Answer 38

The contact must quarantine themselves immediately and for 10d following the recovering of the case. Quaratine could be longer than 10 days if that case cannot really isolate at home

Question 39

Calling the case on may 13th

Answer 39

Lets assume we call the case on may 13th, and the person they live with who became ill on may 9th Lets also assume that the case has fully recovered on may 19th (10 days after onset). Therefore, 10 days after their last infectious contact would be may 29th