NCT04838795

Brief Summary

To monitor the effectiveness of the single-dose Ad26.COV2.S COVID-19 vaccine among health care workers (HCW) in South Africa

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
477,102

participants targeted

Target at P75+ for phase_3

Timeline
Completed

Started Feb 2021

Shorter than P25 for phase_3

Geographic Reach
1 country

31 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 17, 2021

Completed
Same day until next milestone

Study Start

First participant enrolled

February 17, 2021

Completed
2 months until next milestone

First Posted

Study publicly available on registry

April 9, 2021

Completed
12 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 31, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 31, 2022

Completed
Last Updated

August 1, 2022

Status Verified

October 1, 2021

Enrollment Period

1.1 years

First QC Date

February 17, 2021

Last Update Submit

July 29, 2022

Conditions

Outcome Measures

Primary Outcomes (1)

  • Number of severe COVID, hospitalizations and deaths in HCWs as compared with the general unvaccinated population in South Africa

    Rates of hospitalizations and deaths among vaccinated HCWs versus general unvaccinated population

    24 Months

Secondary Outcomes (5)

  • The number of symptomatic SARSCoV-2 infections among vaccinated HCWs

    24 Months

  • The measure of genetic diversity of breakthrough SARSCoV-2 infections

    24 months

  • Monitoring for asymptomatic infection in a sub-set (10 000) of HCWs

    24 Months

  • Monitor for safety and any unexpected adverse effects of the vaccine administration -pharmacovigilance

    24 Months

  • The vaccine uptake among HCWs in South Africa

    12 Months

Other Outcomes (1)

  • To monitor for safety and any unexpected adverse effects of the vaccine administration

    24 Months

Interventions

To monitor the effectiveness of the single dose Ad26.COV2.S COVID-19 vaccine among health care workers (HCW) as compared to the general unvaccinated population in South Africa

Eligibility Criteria

Age18 Years - 105 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age 18 and older
  • Health care worker in the private or public service
  • The President and Deputy President of South Africa\* (The President and Deputy President of South Africa have been included in the protocol to address the issue of vaccine hesitancy. )
  • Willingness and ability to comply vaccination plan and other study procedures.
  • Capable of giving electronic or personal signed informed consent as described in Appendix 5, which includes compliance with the requirements in this protocol.
  • Age 18 and older
  • Health care worker in the private or public service
  • Willingness and ability to comply with all scheduled visits, vaccination plan, laboratory tests, and other study procedures, with follow-up at an ENSEMBLE site.
  • Capable of giving electronic or personal signed informed consent as described in Appendix 5, which includes compliance with the requirements in this protocol.

You may not qualify if:

  • Any significant acute or chronic medical condition, situation or circumstance that in the opinion of the PI/designee makes the participant unsuitable for participation in the study, or jeopardises the safety or rights of the participant
  • Participant reports being pregnant at time of enrolment, planning conception within 3 months.
  • Participants who report breastfeeding at the time of enrolment will be excluded.
  • History of severe adverse reaction associated with a vaccine and/or severe allergic reaction (e.g., anaphylaxis) to any component of the vaccine.
  • Participants who have experienced major venous and arterial thrombosis occurring with thrombocytopenia following vaccination with any COVID-19 vaccine should not enrol in Sisonke.
  • Participants with a history of heparin-induced thrombocytopenia.
  • Note:
  • Conditions of interest:
  • We note that international reports of VITT have not identified a risk factor, nor does there appear to be any prothrombotic state that indicates a risk factor for this immune response.
  • Nevertheless, the Sisonke study will enrol participants with chronic history of severe clotting disorders only after consultation and approval of the study Protocol Safety Review Team (PSRT).
  • We have identified certain specific conditions of special interest such as:
  • cerebral venous sinus thrombosis,
  • antiphospholipid syndrome
  • Individuals on therapeutic anticoagulants for current or previous arterial or venous thrombosis or embolism

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (31)

Nelson Mandela Academic Clinical Research Unit (NeMACRU)

Mthatha, Eastern Cape, 5100, South Africa

Location

PHOENIX Pharma Pty Ltd

Port Elizabeth, Eastern Cape, 6001, South Africa

Location

Josha Research

Bloemfontein, Free State, 9300, South Africa

Location

CRISMO Research Centre, Dr Bhekithemba

Germiston, Gauteng, 1401, South Africa

Location

Perinatal HIV Research Unit (PHRU), SOWETO

Johannesburg, Gauteng, 1862, South Africa

Location

Wits RHI: Shandukani Research Centre

Johannesburg, Gauteng, 2001, South Africa

Location

Themba Lethu HIV Research Unit (CHRU), Dr

Johannesburg, Gauteng, South Africa

Location

Synexus SA - Stanza Clinical Research Centre

Pretoria, Gauteng, 0122, South Africa

Location

Setshaba Research Centre,

Pretoria, Gauteng, 0152, South Africa

Location

Synexus Watermeyer Clinical Research Centre,

Pretoria, Gauteng, 0184, South Africa

Location

Ndlovu Research Centre

Pretoria, Gauteng, South Africa

Location

The Aurum Institute: Tembisa Clinical Research Centre

Johannesburg, Gauteng - South, 1632, South Africa

Location

Perinatal HIV Research Unit Kliptown

Johannesburg, Gauteng - South, 1809, South Africa

Location

Botha's Hill Clinical Research Site

Bothas Hill, KwaZulu-Natal, 3660, South Africa

Location

CAPRISA eThekwini Clinical Research Site, Dr

Durban, KwaZulu-Natal, 4001, South Africa

Location

Chatsworth Clinical Research Site

Durban, KwaZulu-Natal, 4030, South Africa

Location

CAPRISA Vulindlela Clinical Research Site, Dr

Durban, KwaZulu-Natal, South Africa

Location

Qhakaza Mbokodo Research Clinic

Ladysmith, KwaZulu-Natal, 3370, South Africa

Location

Tongaat Clinical Research Site, Dr

Tongaat, KwaZulu-Natal, 4400, South Africa

Location

Mzansi Ethical Research Centre

Middleburg, Mpumalanga, 1050, South Africa

Location

The Aurum Institute Klerksdorp Clinical Research Centre

Klerksdorp, North West, 2571, South Africa

Location

FAMCRU (Family Clinical Research Unit),

Cape Town, Western Cape, 7505, South Africa

Location

TASK Central

Cape Town, Western Cape, 7530, South Africa

Location

TASK Clinical Research Centre

Cape Town, Western Cape, 7530, South Africa

Location

Emavundleni Research Centre

Cape Town, Western Cape, 7781, South Africa

Location

Khayelitsha CRS, Dr Amy Ward / Dr Graeme Meintjes

Cape Town, Western Cape, 7784, South Africa

Location

Desmond Tutu Health Foundation CTU J52 Old Main Building Groote SchuurHospital

Cape Town, Western Cape, 7925, South Africa

Location

Synexus Helderberg Clinical Research Centre, Dr Vera

Somerset West, Western Cape, 7130, South Africa

Location

South African Vaccine Initiative (SATVI), Dr Angelique Kany Kany

Worcester, Western Cape, 6850, South Africa

Location

Desmond Tutu Health Foundation - Masiphumelele Research Office

Cape Town, 7975, South Africa

Location

The Aurum Institute: Rustenburg Clinical Research Centre, Dr Lawrence

Rustenburg, 0299, South Africa

Location

Related Publications (3)

  • Jacobson BF, Schapkaitz E, Takalani A, Rowji PF, Louw V, Opie J, Bekker LG, Garrett N, Goga A, Reddy T, Zuma NY, Sanne I, Seocharan I, Peter J, Robinson M, Collie S, Khan A, Takuva S, Gray G. Vascular thrombosis after single dose Ad26.COV2.S vaccine in healthcare workers in South Africa: open label, single arm, phase 3B study (Sisonke study). BMJ Med. 2023 Mar 23;2(1):e000302. doi: 10.1136/bmjmed-2022-000302. eCollection 2023.

  • Takuva S, Takalani A, Seocharan I, Yende-Zuma N, Reddy T, Engelbrecht I, Faesen M, Khuto K, Whyte C, Bailey V, Trivella V, Peter J, Opie J, Louw V, Rowji P, Jacobson B, Groenewald P, Dorrington RE, Laubscher R, Bradshaw D, Moultrie H, Fairall L, Sanne I, Gail-Bekker L, Gray G, Goga A, Garrett N; Sisonke study team. Safety evaluation of the single-dose Ad26.COV2.S vaccine among healthcare workers in the Sisonke study in South Africa: A phase 3b implementation trial. PLoS Med. 2022 Jun 21;19(6):e1004024. doi: 10.1371/journal.pmed.1004024. eCollection 2022 Jun.

  • Bekker LG, Garrett N, Goga A, Fairall L, Reddy T, Yende-Zuma N, Kassanjee R, Collie S, Sanne I, Boulle A, Seocharan I, Engelbrecht I, Davies MA, Champion J, Chen T, Bennett S, Mametja S, Semenya M, Moultrie H, de Oliveira T, Lessells RJ, Cohen C, Jassat W, Groome M, Von Gottberg A, Le Roux E, Khuto K, Barouch D, Mahomed H, Wolmarans M, Rousseau P, Bradshaw D, Mulder M, Opie J, Louw V, Jacobson B, Rowji P, Peter JG, Takalani A, Odhiambo J, Mayat F, Takuva S, Corey L, Gray GE; Sisonke Protocol Team; Sisonke Study Team. Effectiveness of the Ad26.COV2.S vaccine in health-care workers in South Africa (the Sisonke study): results from a single-arm, open-label, phase 3B, implementation study. Lancet. 2022 Mar 19;399(10330):1141-1153. doi: 10.1016/S0140-6736(22)00007-1.

MeSH Terms

Conditions

Severe Acute Respiratory Syndrome

Condition Hierarchy (Ancestors)

Respiratory Tract InfectionsInfectionsCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsVirus DiseasesRespiratory Tract Diseases

Study Officials

  • Glenda E Gray, MBChB

    Non-Executive Director

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 3
Allocation
NA
Masking
NONE
Purpose
PREVENTION
Intervention Model
SINGLE GROUP
Model Details: Open-label, single-arm phase 3B vaccine implementation study
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 17, 2021

First Posted

April 9, 2021

Study Start

February 17, 2021

Primary Completion

March 31, 2022

Study Completion

March 31, 2022

Last Updated

August 1, 2022

Record last verified: 2021-10

Locations