MINISTRY OF HEALTH | SOCIALIST REPUBLIC OF VIETNAM |
No. 5053/QĐ-BYT | Hanoi, December 03, 2020 |
PROMULGATION OF “CONTACT TRACING FOR COVID-19 HANDBOOK”
THE MINISTER OF HEALTH
Pursuant to the Government’s Decree No. 75/2017/NĐ-CP dated June 20, 2017 on functions, tasks, powers and organizational structure of the Ministry of Health;
At the request of the Director of General Department of Preventive Medicine, the Ministry of Health,
DECIDES:
Article 1.“Contact Tracing for Covid-19 Handbook” is promulgated together with this Decision
Article 2.“Contact Tracing for Covid-19 Handbook” shall be applied nationwide.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Article 4.The Chief of the Ministry Office; the Ministerial Chief Inspector, Directors of Departments of the Ministry of Health; Directors of hospitals affiliated to the Ministry of Health; Directors of Epidemiology Institutes, Pasteur Institutes, National Institute for Malariology - Parasitology – Entomology, Institute of Hygiene and Public Health of Ho Chi Minh City, Provincial Departments of Health; heads of health units of other Ministries and central authorities, heads of relevant units are responsible for the implementation of this Decision./.
PP MINISTER
THỨ TRƯỞNG
Do Xuan Tuyen
CONTACT TRACING FOR COVID-19 HANDBOOK
PREFACE
COVID-19 is a group A infectious disease caused by the SARS-CoV-2 virus; the disease is transmitted from person to person. The incubation period is approximately 14 days. Patients may have diverse clinical symptoms: fever, cough, sore throat, fatigue, aches, decrease in or loss of taste and smell, shortness of breath, possibly severe pneumonia, acute respiratory failure and death, especially in people with underlying medical conditions, chronic diseases and the elderly. There is a high rate of people infected with SARS-CoV-2 virus without clinical symptoms (about 40%) and can be a source of transmission in the community, making epidemic management more difficult.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
To date, there is no specific treatment for COVID-19 and no vaccine is widely used in the community. Surveillance, early detection, contact tracing and isolating sources of infection are still currently the main measures in preventing the spread of the disease in clusters.
This Handbook is developed by the Ministry of Health on the basis of Pursuant to experience from Covid-19 control efforts in Vinh Phuc, Hanoi, Hai Duong, Da Nang and other areas in order to provide instructions for health workers to carry out contact tracing and organize quarantine, prevent outbreak of the disease in the community.
Find and quarantine people who have contact with a case to prevent spreading of the disease.
1 – Contact tracing must be rapid and thorough to avoid missing contacts.
2 - Steering Committees for Covid-19 Control of provinces, districts, communes, agencies and units shall mobilize all resources to ensure rapid and effective contact tracing.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
1 – Contact tracing must be carried out as soon as possible after having information about a confirmed case.
2 – Identify exposure sites, then people who have contact with the confirmed case.
3 - Utilize multiple forces to find contacts at the exposure sites.
4 – Implement multiple contact tracing measures; Information collected may be overlapping but also complementary. This will help finding contacts thoroughly and systematically.
5 – Invest resources and time to find F1 cases as quickly as possible; Identify F2 cases after tracing of F1 cases is relatively finished.
6 – The exposure sites and close contacts of F1 must be identified in a period of 3 days before the onset date of until the patient is isolated.
7 – Contact tracers shall implement measures to prevent infection in performance of their duties.
1 - F1: A person who has contact within 2 meters with a confirmed case (hereinafter referred to as “patient”) in 03 days before the onset date until the patient is isolated. Onset date is the day the patient has the first symptoms which can be: fever, fatigue; body aches, chills; decrease or loss of taste or smell; fever; cough; sore throat ... If the patient is a carrier (infected without symptoms), the onset date shall be the day on which the specimen is collected and tests positive for SARS-CoV-2.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
3 - Exposure site: A location or event where the patient visited or participated in during the period of 03 days before the onset date until the patient is isolated.
Note: The investigation into the source of the patient in 14 days before onset date is part of baseline epidemiological investigation and not covered by this Handbook.
1. Step 1: Identification of exposure sites
- Investigators: Investigators of the Center for Disease Control (CDC) of the province or the medical center of the district, local authorities and local health authorities.
- Product: A list of exposure sites according to Form 1.
- Tracing method:
+ Question the patient in person or by phone
+ Question the patient’s relatives/friends/neighbors
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
- Contents:
Ask about the exposure sites where the patient visited or participated in during the period of 3 days before onset date until the patient is isolated according to Table 1. Specify the names/locations/times of the exposure sites according to Form 1.
Table 1: Common exposure sites
EXPOSURE SITES
1
Wedding, funeral, death anniversary, birthday, housewarming parties
2
Crowded parties
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
3
Frequently visited places (relatives, friends, etc.)
4
Supermarkets, shopping malls, etc.
5
Markets, wholesaling market, makeshift markets, etc.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Retailing stores/grocery stores
7
Discotheques/bars
8
Restaurants, coffee shops
9
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
10
Theme parks, public parks, etc.
11
Theaters, cinemas, stages
12
Pagodas, temples, churches, etc.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
13
Meetings (retirement clubs, class reunions, clubs, groups, etc.)
14
Hotels, motels, etc.
15
Schools, training centers, etc.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Workplaces
17
Hospitals, clinics, health facilities, etc.
18
Taxi, buses, trains, planes, boats, etc.
19
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
20
Tours/business trips
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Other (specify) .......................................................................
2 – Step 2: Notify the coordination unit of the exposure sites
The coordination unit should be located within the infectious disease control department of CDC of the province or medical center of the district.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
3 – Step 3: Initiate F1 tracing
Combine multiple methods: questioning the patient; tracing at the patient’s community; tracing at exposure sites; tracing through mass media, Bluezone, Viet Nam Health Declaration applications.
3.1. F1 tracing by questioning the patient:
- Investigators: After exposure sites are identified and reported, local authorities and local health authorities, investigators of the CDC of the province or the medical center of the district in Step 1 shall cooperate with local authorities and health facilities in F1 tracing by questioning the patient’s, his/her family and related persons.
- Product: A list of F1 cases according to Form 2
- Tracing method:
+ Question the patient about activities of each day in reverse chronological order to identify F1 cases accordingly
+ Make a list of F1 cases according to Form 2.
+ Question the patient one more time about the common close contacts according to Table 2, keep adding F1 cases to Form 2.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
COMMON CLOSE CONTACTS
1
People living in the same house/room/household
2
Lover/boyfriend/girlfriend
3
Relatives
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
4
Neighbors
5
Close and frequently met friends
6
People having contact through everyday work/life
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Co-workers
8
People in the same business trip/meeting
9
People in the same class/school
10
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
11
People in the same club (poetry, sports, etc.)
12
People in the same trip/party/card game
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People in the same religious event
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
14
People in/on the same vehicle
15
People in the same hospital department/room
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Attendants and carers of the patient at health facility
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Health workers
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Other (specify) .......................................................................
+ Keep finding information and add more exposure sites to Form 1 (if any).
+ Provide Form 2, a pen and phone number for the patient to add close contacts in the next days. Instruct the patient to send messages via Zalo, Viber, etc. or call the investigator when additional F1 cases are identified.
+ Question the patient on the next days if necessary.
3.2. F1 tracing in the patient’s community
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
- Product: A list of F1 cases according to Form No. 3
- Tracing method:
+ Check every house, question everyone. To be specific: start with the patient house, then the adjacent houses in the patient’s community to make a list of F1 cases according to Form 3.
+ Make announcement on the public address speakers about the confirmed case, definition of F1 cases; request people who identify themselves as F1 cases to report to the local authorities and medical center of the commune.
3.3. F1 tracing at exposure sites
- Investigators: Contract tracers of the province/district/commune or additional contact tracing forces (medical students, other force), local authorities, police forces, neighborhood authority, community Covid-19 team, local association officers and other relevant forces.
- Product: A list of F1 cases according to Form No. 3
- Tracing method:
+ Contact the responsible persons of the exposure sites.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
+ Directly question relevant people about their contacts.
+ Extract cameras at exposure sites (if any).
+ Examine work log at exposure sites (if any)
+ Examine the list of relevant people at exposure sites: list of guests of wedding, parties, etc. (if any).
- + Make announcement on the mass media about the confirmed case and the exposure sites; request relevant people to report to the local authorities and health authorities.
- Provide email addresses and phone numbers for relevant people to provide information if necessary.
- Make a detailed list of F1 cases at each exposure site according to Form 3.
Note: A person may have contact with the patient at multiple exposure sites and included in multiple lists. All of them must be recorded and overlapping events will be handled later.
3.4. F1 tracing through mass media
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Instruct the people to provide additional information about F1 cases for local authorities and health authorities.
- The local authorities, CDC of the province or medical center of the district shall provide their phone numbers or hotline numbers, receive information provided by the people after making announcements on the mass media.
- Contact tracing teams shall keep adding new F1 cases if found.
- Make a supplementary list of F1 cases according to Form No. 3.
3.5. Contact tracing via Bluezone, Viet Nam Health Declaration.
Bluezone application is installed on smart phones to detect Bluezone users who have close contact with a Covid-19 patient who also uses Bluezone. Contact tracing units shall register with the Ministry of Health to receive instructions on how to carry out contact tracing at https://cdc.bluezone.gov.vn/. Viet Nam Health Declaration may also be used to determine travel, quarantine, lodging history of inbound passengers and domestic travelers.
4 - Step 4: Review and complete the list of F1 cases
- All contact tracing teams shall send F1 lists to the coordination unit as soon as they are completed; keep updating the lists until contact tracing is completed (take photos of F1 lists and send them to the coordination unit by Zalo, Viber, etc.).
- The coordination unit shall enter the F1 lists sent by contact tracing teams into Microsoft Excel or other applications. Use Microsoft Excel or other applications to eliminate overlapping information and make a consolidated list of all F1 cases.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
5 – Step 5: Organization of isolation and specimen collection
- The Steering Committee for Covid-19 Control and local authorities shall prepare vehicles to take F1 cases to quarantine centers in accordance with regulations of the Ministry of Health. While taking F1 cases to quarantine centers, local health authorities, local authorities and other local forces shall carry on contact tracing to make sure all F1 cases are quarantined correctly.
- F1 cases shall have their specimens collected for the first time at the quarantine center as soon as possible. Specimens shall be transported to a capable laboratory for testing as per regulations of the Ministry of Health. It is not recommended to collect specimens of F1 cases at their communities to avoid disorder and untimely quarantine of F1 cases.
1 - Hand out Form 4 (List of F2 cases declared by F1 case) to F1 cases. F1 cases shall complete this form themselves.
2 – The quarantine center, local authorities and health authorities shall carry on F2 tracing at the community and questioning of F1 cases at the quarantine center.
3 – Transfer the list of F2 cases to the local authorities for home quarantine as per regulations.
FORM 1. LIST OF EXPOSURE SITES
Patient’s full name:........................................................... Gender: ................... Year of birth ...................
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Residence: ...................... Commune/Ward: .................. District: ...................... Province/City: ................
Asymptomatic patient Symptomatic patient
Onset date (in case of symptomatic patient): ......../........./...........
Date of positive test result: ......./......../......... – Date of isolation: ........../.........../........
Contact tracing period: From ........../.........../............ to........../.........../............
List of exposure sites where the patient visited or participated in during the period of 03 days before onset date until the patient is isolated (Table 1):
No.
Exposure site
Address
Time
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
1
2
3
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
4
5
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
6
7
8
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
9
10
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
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12
13
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
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FORM 2: LIST OF F1 CASES BY DATE
Investigation unit:............................................. Investigation team:................................................. Investigator’s name: ......................................................
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Onset date: ........../.........../.............. Date of collection of SARS-CoV-2 positive specimen: ........../.........../.............
Contact tracing period: From ........../.........../............ to ........../.........../............
Date
F1’s full name
Gender
Age
Tel
Current residence
Relationship and contact with patient *
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
*Example: Relationship: husband/wife/father/mother/friend/co-worker, etc. Contact: living in the same house/sharing a table/working together etc.
FORM 3. LIST OF F1 CASES AT EXPOSURE SITES
Investigation unit:............................................. Investigation team:................................................. Investigator’s name: ......................................................
Patient’s name:.......................................................... Patient’s code......................... Patient’s phone number: ...............................
Onset date: ........../.........../.............. Date of collection of SARS-CoV-2 positive specimen: ........../.........../.............
Name of exposure site: ..................................................................................................................
Contact tracing period: From ........../.........../............ to ........../.........../............
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
F1’s full name
Gender
Age
Tel
Current residence
Relationship and contact with patient*
Late date of contact
Current condition
1
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
2
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
3
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
4
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
5
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
6
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
7
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
8
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
*Example: Relationship: husband/wife/father/mother/friend/co-worker, etc. Contact situation: living in the same house/sharing a table/working together etc.
Note: a person may have contact with the patient at multiple events/locations/exposure sites. All of them must be recorded.
- The house and residence of the patient are consider an exposure site
FORM 4: LIST OF F2 CASES DECLARED BY F1 CASES
(completed by F1 cases)
F1 case’s name :.......................................................... Phone number: ...............................
Name of the patient having contact with F1 case:.......................................................... Patient’s code.........................
Contact tracing period from the first day of contact with the patient (3 days before onset date) until the day on which the F1 case is isolated: from ..................... to ...................................
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
F2’s full name
Gender
Age
Tel
Current residence
Relationship and c situation of contact with F1 case*
Late date of contact
1
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
2
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
3
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
4
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
6
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
7
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
8
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
9
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
11
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
12
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
13
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
*Example: Relationship: husband/wife/father/mother/friend/co-worker, etc. Contact: living in the same house/sharing a table/working together etc.
TABLE 1: COMMON EXPOSURE SITES
No.
Locations
Tick here
1
Wedding, funeral, death anniversary, birthday, housewarming parties
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
2
Crowded parties
3
Frequently visited places (relatives, friends, etc.)
4
Supermarkets, shopping malls, Etc.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Markets, wholesaling market, makeshift markets, etc.
6
Retailing stores/grocery stores
7
Discotheques/bars
8
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
9
Crowded public places
10
Theme parks, public parks, etc.
11
Theaters, cinemas, stages
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
12
Pagodas, temples, churches, etc.
13
Meetings (retirement clubs, class reunions, clubs, groups, etc.)
14
Hotels, motels, etc.
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Schools, training centers, etc.
16
Workplaces
17
Hospitals, clinics, health facilities, etc.
18
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
19
Repair shops, barber shops, beauty salons, etc.
20
Tours/business trips
21
Other (specify) .......................................................................
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
No.
Description
Tick here
1
People living in the same house/room/household
2
Lover/boyfriend/girlfriend
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
3
Relatives
4
Neighbors
5
Close and frequently met friends
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
People having contact through everyday work/life
7
Co-workers
8
People in the same business trip/meeting
9
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
10
People in the same group of tourists/visitors
11
People in the same club (poetry, sports, etc.)
12
People in the same trip/party/card game
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
13
People in the same religious event
14
People in/on the same vehicle
15
People in the same hospital department/room
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Mọi chi tiết xin liên hệ: ĐT:(028) 3930 3279DĐ:0906 22 99 66
Attendants and carers of the F0 case at health facility
17
Health workers
18
Other (specify) .......................................................................
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