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COMPLETED
NCT05148845
PHASE3

Sisonke 2 - A COVID-19 Vaccine Boost Open Label Study.

Sponsor: Wits Health Consortium (Pty) Ltd

View on ClinicalTrials.gov

Summary

To evaluate the effectiveness of the single dose Ad26.COV2.S COVID-19 vaccine plus a homologous boostwith Ad26.COV2.S COVID-19 vaccine among Sisonke participants as compared to unboosted Sisonkeparticipants; vaccinated; and unvaccinated populations in South Africa

Official title: Open-label, Single-arm Phase 3B Implementation Study to Evaluate the Effectiveness of the Homologous Boost of Ad26.COV2.S COVID-19 Vaccine Following the Prime Dose Among Sisonke Participants in South Africa(VAC31518COV30XX)

Key Details

Gender

All

Age Range

18 Years - Any

Study Type

INTERVENTIONAL

Enrollment

500000

Start Date

2021-11-10

Completion Date

2023-06-30

Last Updated

2026-09-01

Healthy Volunteers

Yes

Interventions

BIOLOGICAL

Sisonke Heterologous mRNA-1273 boost after prime with Ad26.COV2.S

To evaluate the effectiveness and safety of the single dose Ad26.COV2.S (Jansen) COVID-19 vaccine plus a homologous boost with Ad26.COV2.S (Janssen) COVID-19 vaccine among Sisonke participants as compared to unboosted Sisonke participants In addition we will continue to evaluate VE of the Sisonke Boost compared to: i) Vaccinated populations pre boosts ii) Unvaccinated populations in South Africa.

DRUG

Sisonke Heterologous mRNA-1273 boost after prime with Ad26.COV2.S

Sisonke Heterologous mRNA-1273 boost after prime with Ad26.COV2.S

Locations (31)

Nelson Mandela Academic Clinical Research Unit (NeMACRU)

Mthatha, Eastern Cape, South Africa

PHOENIX Pharma Pty Ltd

Port Elizabeth, Eastern Cape, South Africa

Josha Research

Bloemfontein, Free State, South Africa

Perinatal HIV Research Unit (PHRU), SOWETO

Johannesburg, Gauteng, South Africa

Clinical HIV Research Unit (CHRU),

Johannesburg, Gauteng, South Africa

MeCRU Clinical Research Unit

Pretoria, Gauteng, South Africa

Setshaba Research Centre,

Pretoria, Gauteng, South Africa

The Aurum Institute Clinical Research Centre, Pretoria

Pretoria, Gauteng, South Africa

Ndlovu Research Centre

Pretoria, Gauteng, South Africa

The Aurum Institute: Tembisa Clinical Research Centre

Johannesburg, Gauteng - South, South Africa

Perinatal HIV Research Unit Kliptown

Johannesburg, Gauteng - South, South Africa

Botha's Hill Clinical Research Site

Bothas Hill, KwaZulu-Natal, South Africa

CAPRISA eThekwini Clinical Research Site, Dr

Durban, KwaZulu-Natal, South Africa

Chatsworth Clinical Research Site

Durban, KwaZulu-Natal, South Africa

CAPRISA Vulindlela Clinical Research Site, Dr Disebo Makhaza

Durban, KwaZulu-Natal, South Africa

Qhakaza Mbokodo Research Clinic

Ladysmith, KwaZulu-Natal, South Africa

Tongaat Clinical Research Site, Dr

Tongaat, KwaZulu-Natal, South Africa

Mzansi Ethical Research Centre

Middleburg, Mpumalanga, South Africa

The Aurum Institute Klerksdorp Clinical Research Centre

Klerksdorp, North West, South Africa

TASK Applied Science, Delft Day Hospital Premises

Cape Town, Western Cape, South Africa

TASK Applied Science, Dr Ivans Toms Clinic Premises

Cape Town, Western Cape, South Africa

FAMCRU (Family Clinical Research Unit),

Cape Town, Western Cape, South Africa

TASK Applied Science, Brooklyn Chest Hospital Premises

Cape Town, Western Cape, South Africa

TASK Central

Cape Town, Western Cape, South Africa

TASK Clinical Research Centre

Cape Town, Western Cape, South Africa

Emavundleni Research Centre

Cape Town, Western Cape, South Africa

Desmond Tutu Health Foundation CTU J52 Old Main Building Groote SchuurHospital

Cape Town, Western Cape, South Africa

TASK Eden

George, Western Cape, South Africa

South African Vaccine Initiative (SATVI)

Worcester, Western Cape, South Africa

Desmond Tutu Health Foundation - Masiphumelele Research Office

Cape Town, South Africa

The Aurum Institute: Rustenburg Clinical Research Centre, Dr Lawrence

Rustenburg, South Africa