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1.
Preprint en Inglés | PREPRINT-MEDRXIV | ID: ppmedrxiv-21266298

RESUMEN

Outbreaks of COVID at university campuses can spread rapidly and threaten the broader community. We describe the management of an outbreak at a Malawian university in April-May 2021 during Malawis second wave. Classes were suspended following detection of infections by routine testing and campus-wide PCR mass testing was conducted. Fifty seven cases were recorded, 55 among students, two among staff. Classes resumed 28 days after suspension following two weeks without cases. Just 6.3% of full-time staff and 87.4% of outsourced staff tested while 65% of students at the main campus and 74% at the extension campus were tested. Final year students had significantly higher positivity and lower testing coverage compared to freshmen. All viruses sequenced were beta variant and at least four separate virus introductions onto campus were observed. These findings are useful for development of campus outbreak responses and indicate the need to emphasize staff, males and senior students in testing. Article Summary LineSuccessful management of a campus outbreak using test trace and isolate approach with resumption within a month following suspension of all in-person classes. Trends in voluntary testing by gender, age and year of study that can help in formation of future management approaches.

2.
Preprint en Inglés | PREPRINT-MEDRXIV | ID: ppmedrxiv-21258228

RESUMEN

While most people effectively clear SARS-CoV-2, there are several reports of prolonged infection in immunosuppressed individuals. Here we present a case of prolonged infection of greater than 6 months with shedding of high titter SARS-CoV-2 in an individual with advanced HIV and antiretroviral treatment failure. Through whole genome sequencing at multiple time-points, we demonstrate the early emergence of the E484K substitution associated with escape from neutralizing antibodies, followed by other escape mutations and the N501Y substitution found in most variants of concern. This provides support to the hypothesis of intra-host evolution as one mechanism for the emergence of SARS-CoV-2 variants with immune evasion properties.

3.
Preprint en Inglés | PREPRINT-MEDRXIV | ID: ppmedrxiv-21262342

RESUMEN

Global genomic surveillance of SARS-CoV-2 has identified variants associated with increased transmissibility, neutralization resistance and disease severity. Here we report the emergence of the PANGO lineage C.1.2, detected at low prevalence in South Africa and eleven other countries. The emergence of C.1.2, associated with a high substitution rate, includes changes within the spike protein that have been associated with increased transmissibility or reduced neutralization sensitivity in SARS-CoV-2 VOC/VOIs. Like Beta and Delta, C.1.2 shows significantly reduced neutralization sensitivity to plasma from vaccinees and individuals infected with the ancestral D614G virus. In contrast, convalescent donors infected with either Beta or Delta showed high plasma neutralization against C.1.2. These functional data suggest that vaccine efficacy against C.1.2 will be equivalent to Beta and Delta, and that prior infection with either Beta or Delta will likely offer protection against C.1.2.

4.
Raquel Viana; Sikhulile Moyo; Daniel Gyamfi Amoako; Houriiyah Tegally; Cathrine Scheepers; Richard J Lessells; Jennifer Giandhari; Nicole Wolter; Josie Everatt; Andrew Rambaut; Christian Althaus; Eduan Wilkinson; Adriano Mendes; Amy Strydom; Michaela Davids; Simnikiwe Mayaphi; Simani Gaseitsiwe; Wonderful T Choga; Dorcas Maruapula; Boitumelo Zuze; Botshelo Radibe; Legodile Koopile; Roger Shapiro; Shahin Lockman; Mpaphi B. Mbulawa; Thongbotho Mphoyakgosi; Pamela Smith-Lawrence; Mosepele Mosepele; Mogomotsi Matshaba; Kereng Masupu; Mohammed Chand; Charity Joseph; Lesego Kuate-Lere; Onalethatha Lesetedi-Mafoko; Kgomotso Moruisi; Lesley Scott; Wendy Stevens; Constantinos Kurt Wibmer; Anele Mnguni; Arshad Ismail; Boitshoko Mahlangu; Darren P. Martin; Verity Hill; Rachel Colquhoun; Modisa S. Motswaledi; James Emmanuel San; Noxolo Ntuli; Gerald Motsatsi; Sureshnee Pillay; Thabo Mohale; Upasana Ramphal; Yeshnee Naidoo; Naume Tebeila; Marta Giovanetti; Koleka Mlisana; Carolyn Williamson; Nei-yuan Hsiao; Nokukhanya Msomi; Kamela Mahlakwane; Susan Engelbrecht; Tongai Maponga; Wolfgang Preiser; Zinhle Makatini; Oluwakemi Laguda-Akingba; Lavanya Singh; Ugochukwu J. Anyaneji; Monika Moir; Stephanie van Wyk; Derek Tshiabuila; Yajna Ramphal; Arisha Maharaj; Sergei Pond; Alexander G Lucaci; Steven Weaver; Maciej F Boni; Koen Deforche; Kathleen Subramoney; Diana Hardie; Gert Marais; Deelan Doolabh; Rageema Joseph; Nokuzola Mbhele; Luicer Olubayo; Arash Iranzadeh; Alexander E Zarebski; Joseph Tsui; Moritz UG Kraemer; Oliver G Pybus; Dominique Goedhals; Phillip Armand Bester; Martin M Nyaga; Peter N Mwangi; Allison Glass; Florette Treurnicht; Marietjie Venter; Jinal N. Bhiman; Anne von Gottberg; Tulio de Oliveira.
Preprint en Inglés | PREPRINT-MEDRXIV | ID: ppmedrxiv-21268028

RESUMEN

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) epidemic in southern Africa has been characterised by three distinct waves. The first was associated with a mix of SARS-CoV-2 lineages, whilst the second and third waves were driven by the Beta and Delta variants respectively1-3. In November 2021, genomic surveillance teams in South Africa and Botswana detected a new SARS-CoV-2 variant associated with a rapid resurgence of infections in Gauteng Province, South Africa. Within three days of the first genome being uploaded, it was designated a variant of concern (Omicron) by the World Health Organization and, within three weeks, had been identified in 87 countries. The Omicron variant is exceptional for carrying over 30 mutations in the spike glycoprotein, predicted to influence antibody neutralization and spike function4. Here, we describe the genomic profile and early transmission dynamics of Omicron, highlighting the rapid spread in regions with high levels of population immunity.

5.
Eduan Wilkinson; Marta Giovanetti; Houriiyah Tegally; James E San; Richard Lessels; Diego Cuadros; Darren P Martin; Abdel-Rahman N Zekri; Abdoul Sangare; Abdoul Salam Ouedraogo; Abdul K Sesay; Adnene Hammami; Adrienne A Amuri; Ahmad Sayed; Ahmed Rebai; Aida Elargoubi; Alpha K Keita; Amadou A Sall; Amadou Kone; Amal Souissi; Ana V Gutierrez; Andrew Page; Arnold Lambisia; Arash Iranzadeh; Augustina Sylverken; Azeddine Ibrahimi; Bourema Kouriba; Bronwyn Kleinhans; Beatrice Dhaala; Cara Brook; Carolyn Williamson; Catherine B Pratt; Chantal G Akoua-Koffi; Charles Agoti; Collins M Moranga; James D Nokes; Daniel J Bridges; Daniel L Bugembe; Deelan Doolabh; Deogratius Ssemwanga; Derek Tshabuila; Diarra Bassirou; Dominic S.Y. Amuzu; Dominique Goedhals; Dorcas Maruapula; Edith N Ngabana; Eddy Lusamaki; Edidah Moraa; Elmostafa El Fahime; Emerald Jacob; Emmanuel Lokilo; Enatha Mukantwari; Essia Belarbi; Etienne Simon-Loriere; Etile A Anoh; Fabian Leendertz; Faida Ajili; Fares Wasfi; Faustinos T Takawira; Fawzi Derrar; Feriel Bouzid; Francisca M Muyembe; Frank Tanser; Gabriel Mbunsu; Gaetan Thilliez; Gert van Zyl; Grit Schubert; George Githinji; Gordon A Awandare; Haruka Abe; Hela H Karray; Hellen Nansumba; Hesham A Elgahzaly; Hlanai Gumbo; Ibtihel Smeti; Ikhlass B Ayed; Imed Gaaloul; Ilhem B.B. Boubaker; Inbal Gazy; Isaac Ssewanyana; Jean B Lekana-Douk; Jean-Claude C Makangara; Jean-Jacques M Tamfum; Jean M Heraud; Jeffrey G Shaffer; Jennifer Giandhari; Jingjing Li; Jiro Yasuda; Joana Q Mends; Jocelyn Kiconco; Jonathan A Edwards; John Morobe; John N Nkengasong; John Gyapong; John T Kayiwa; Jones Gyamfi; Jouali Farah; Joyce M Ngoi; Joyce Namulondo; Julia C Andeko; Julius J Lutwama; Justin O Grady; Kefenstse A Tumedi; Khadija Said; Kim Hae-Young; Kwabena O Duedu; Lahcen Belyamani; Lavanya Singh; Leonardo de O. Martins; Madisa Mine; Mahmoud el Hefnawi; Mahjoub Aouni; Maha Mastouri; Maitshwarelo I Matsheka; Malebogo Kebabonye; Manel Turki; Martin Nyaga; Matoke Damaris; Matthew Cotten; Maureen W Mburu; Maximillian Mpina; Michael R Wiley; Mohamed A Ali; Mohamed K Khalifa; Mohamed G Seadawy; Mouna Ouadghiri; Mulenga Mwenda; Mushal Allam; My V.T. Phan; Nabil Abid; Nadia Touil; Najla Kharrat; Nalia Ismael; Nedio Mabunda; Nei-yuan Hsiao; Nelson Silochi; Ngonda Saasa; Nicola Mulder; Patrice Combe; Patrick Semanda; Paul E Oluniyi; Paulo Arnaldo; Peter K Quashie; Reuben Ayivor-Djanie; Philip A Bester; Philippe Dussart; Placide K Mbala; Pontiano Kaleebu; Richard Njouom; Richmond Gorman; Robert A Kingsley; Rosina A.A. Carr; Saba Gargouri; Saber Masmoudi; Samar Kassim; Sameh Trabelsi; Sami Kammoun; Sanaa Lemriss; Sara H Agwa; Sebastien Calvignac-Spencer; Seydou Doumbia; Sheila M Madinda; Sherihane Aryeetey; Shymaa S Ahmed; Sikhulile Moyo; Simani Gaseitsiwe; Edgar Simulundu; Sonia Lekana-Douki; Soumeya Ouangraoua; Steve A Mundeke; Sumir Panji; Sureshnee Pillay; Susan Engelbrecht; Susan Nabadda; Sylvie Behillil; Sylvie van der Werf; Tarik Aanniz; Tapfumanei Mashe; Thabo Mohale; Thanh Le-Viet; Tobias Schindler; Upasana Ramphal; Magalutcheemee Ramuth; Vagner Fonseca; Vincent Enouf; Wael H Roshdy; William Ampofo; Wolfgang Preiser; Wonderful T Choga; Yaw Bediako; Yenew K. Tebeje; Yeshnee Naidoo; Zaydah de Laurent; Sofonias K Tessema; Tulio de Oliveira.
Preprint en Inglés | PREPRINT-MEDRXIV | ID: ppmedrxiv-21257080

RESUMEN

The progression of the SARS-CoV-2 pandemic in Africa has so far been heterogeneous and the full impact is not yet well understood. Here, we describe the genomic epidemiology using a dataset of 8746 genomes from 33 African countries and two overseas territories. We show that the epidemics in most countries were initiated by importations, predominantly from Europe, which diminished following the early introduction of international travel restrictions. As the pandemic progressed, ongoing transmission in many countries and increasing mobility led to the emergence and spread within the continent of many variants of concern and interest, such as B.1.351, B.1.525, A.23.1 and C.1.1. Although distorted by low sampling numbers and blind-spots, the findings highlight that Africa must not be left behind in the global pandemic response, otherwise it could become a breeding ground for new variants.

6.
Houriiyah Tegally; James E. San; Matthew Cotten; Bryan Tegomoh; Gerald Mboowa; Darren P. Martin; Cheryl Baxter; Monika Moir; Arnold Lambisia; Amadou Diallo; Daniel G. Amoako; Moussa M. Diagne; Abay Sisay; Abdel-Rahman N. Zekri; Abdelhamid Barakat; Abdou Salam Gueye; Abdoul K. Sangare; Abdoul-Salam Ouedraogo; Abdourahmane SOW; Abdualmoniem O. Musa; Abdul K. Sesay; Adamou LAGARE; Adedotun-Sulaiman Kemi; Aden Elmi Abar; Adeniji A. Johnson; Adeola Fowotade; Adewumi M. Olubusuyi; Adeyemi O. Oluwapelumi; Adrienne A. Amuri; Agnes Juru; Ahmad Mabrouk Ramadan; Ahmed Kandeil; Ahmed Mostafa; Ahmed Rebai; Ahmed Sayed; Akano Kazeem; Aladje Balde; Alan Christoffels; Alexander J. Trotter; Allan Campbell; Alpha Kabinet KEITA; Amadou Kone; Amal Bouzid; Amal Souissi; Ambrose Agweyu; Ana V. Gutierrez; Andrew J. Page; Anges Yadouleton; Anika Vinze; Anise N. Happi; Anissa Chouikha; Arash Iranzadeh; Arisha Maharaj; Armel Landry Batchi-Bouyou; Arshad Ismail; Augustina Sylverken; Augustine Goba; Ayoade Femi; Ayotunde Elijah Sijuwola; Azeddine Ibrahimi; Baba Marycelin; Babatunde Lawal Salako; Bamidele S. Oderinde; Bankole Bolajoko; Beatrice Dhaala; Belinda L. Herring; Benjamin Tsofa; Bernard Mvula; Berthe-Marie Njanpop-Lafourcade; Blessing T. Marondera; Bouh Abdi KHAIREH; Bourema Kouriba; Bright Adu; Brigitte Pool; Bronwyn McInnis; Cara Brook; Carolyn Williamson; Catherine Anscombe; Catherine B. Pratt; Cathrine Scheepers; Chantal G. Akoua-Koffi; Charles N. Agoti; Cheikh Loucoubar; Chika Kingsley Onwuamah; Chikwe Ihekweazu; Christian Noel MALAKA; Christophe Peyrefitte; Chukwuma Ewean Omoruyi; Clotaire Donatien Rafai; Collins M. Morang'a; D. James Nokes; Daniel Bugembe Lule; Daniel J. Bridges; Daniel Mukadi-Bamuleka; Danny Park; David Baker; Deelan Doolabh; Deogratius Ssemwanga; Derek Tshiabuila; Diarra Bassirou; Dominic S.Y. Amuzu; Dominique Goedhals; Donald S. Grant; Donwilliams O. Omuoyo; Dorcas Maruapula; Dorcas Waruguru Wanjohi; Ebenezer Foster-Nyarko; Eddy K. Lusamaki; Edgar Simulundu; Edidah M. Ong'era; Edith N. Ngabana; Edward O. Abworo; Edward Otieno; Edwin Shumba; Edwine Barasa; EL BARA AHMED; Elmostafa EL FAHIME; Emmanuel Lokilo; Enatha Mukantwari; Erameh Cyril; Eromon Philomena; Essia Belarbi; Etienne Simon-Loriere; Etile A. Anoh; Fabian Leendertz; Fahn M. Taweh; Fares Wasfi; Fatma Abdelmoula; Faustinos T. Takawira; Fawzi Derrar; Fehintola V Ajogbasile; Florette Treurnicht; Folarin Onikepe; Francine Ntoumi; Francisca M. Muyembe; FRANCISCO NGIAMBUDULU; Frank Edgard ZONGO Ragomzingba; Fred Athanasius DRATIBI; Fred-Akintunwa Iyanu; Gabriel K. Mbunsu; Gaetan Thilliez; Gemma L. Kay; George O. Akpede; George E Uwem; Gert van Zyl; Gordon A. Awandare; Grit Schubert; Gugu P. Maphalala; Hafaliana C. Ranaivoson; Hajar Lemriss; Hannah E Omunakwe; Harris Onywera; Haruka Abe; HELA KARRAY; Hellen Nansumba; Henda Triki; Herve Alberic ADJE KADJO; Hesham Elgahzaly; Hlanai Gumbo; HOTA mathieu; Hugo Kavunga-Membo; Ibtihel Smeti; Idowu B. Olawoye; Ifedayo Adetifa; Ikponmwosa Odia; Ilhem Boutiba-Ben Boubaker; Isaac Ssewanyana; Isatta Wurie; Iyaloo S Konstantinus; Jacqueline Wemboo Afiwa Halatoko; James Ayei; Janaki Sonoo; Jean Bernard LEKANA-DOUKI; Jean-Claude C. Makangara; Jean-Jacques M. Tamfum; Jean-Michel Heraud; Jeffrey G. Shaffer; Jennifer Giandhari; Jennifer Musyoki; Jessica N. Uwanibe; Jinal N. Bhiman; Jiro Yasuda; Joana Morais; Joana Q. Mends; Jocelyn Kiconco; John Demby Sandi; John Huddleston; John Kofi Odoom; John M. Morobe; John O. Gyapong; John T. Kayiwa; Johnson C. Okolie; Joicymara Santos Xavier; Jones Gyamfi; Joseph Humphrey Kofi Bonney; Joseph Nyandwi; Josie Everatt; Jouali Farah; Joweria Nakaseegu; Joyce M. Ngoi; Joyce Namulondo; Judith U. Oguzie; Julia C. Andeko; Julius J. Lutwama; Justin O'Grady; Katherine J Siddle; Kathleen Victoir; Kayode T. Adeyemi; Kefentse A. Tumedi; Kevin Sanders Carvalho; Khadija Said Mohammed; Kunda G. Musonda; Kwabena O. Duedu; Lahcen Belyamani; Lamia Fki-Berrajah; Lavanya Singh; Leon Biscornet; Leonardo de Oliveira Martins; Lucious Chabuka; Luicer Olubayo; Lul Lojok Deng; Lynette Isabella Ochola-Oyier; Madisa Mine; Magalutcheemee Ramuth; Maha Mastouri; Mahmoud ElHefnawi; Maimouna Mbanne; Maitshwarelo I. Matsheka; Malebogo Kebabonye; Mamadou Diop; Mambu Momoh; Maria da Luz Lima Mendonca; Marietjie Venter; Marietou F Paye; Martin Faye; Martin M. Nyaga; Mathabo Mareka; Matoke-Muhia Damaris; Maureen W. Mburu; Maximillian Mpina; Claujens Chastel MFOUTOU MAPANGUY; Michael Owusu; Michael R. Wiley; Mirabeau Youtchou Tatfeng; Mitoha Ondo'o Ayekaba; Mohamed Abouelhoda; Mohamed Amine Beloufa; Mohamed G Seadawy; Mohamed K. Khalifa; Mohammed Koussai DELLAGI; Mooko Marethabile Matobo; Mouhamed Kane; Mouna Ouadghiri; Mounerou Salou; Mphaphi B. Mbulawa; Mudashiru Femi Saibu; Mulenga Mwenda; My V.T. Phan; Nabil Abid; Nadia Touil; Nadine Rujeni; Nalia Ismael; Ndeye Marieme Top; Ndongo Dia; Nedio Mabunda; Nei-yuan Hsiao; Nelson Borico Silochi; Ngonda Saasa; Nicholas Bbosa; Nickson Murunga; Nicksy Gumede; Nicole Wolter; Nikita Sitharam; Nnaemeka Ndodo; Nnennaya A. Ajayi; Noel Tordo; Nokuzola Mbhele; Norosoa H Razanajatovo; Nosamiefan Iguosadolo; Nwando Mba; Ojide C. Kingsley; Okogbenin Sylvanus; Okokhere Peter; Oladiji Femi; Olumade Testimony; Olusola Akinola Ogunsanya; Oluwatosin Fakayode; Onwe E. Ogah; Ousmane Faye; Pamela Smith-Lawrence; Pascale Ondoa; Patrice Combe; Patricia Nabisubi; Patrick Semanda; Paul E. Oluniyi; Paulo Arnaldo; Peter Kojo Quashie; Philip Bejon; Philippe Dussart; Phillip A. Bester; Placide K. Mbala; Pontiano Kaleebu; Priscilla Abechi; Rabeh El-Shesheny; Rageema Joseph; Ramy Karam Aziz; Rene Ghislain Essomba; Reuben Ayivor-Djanie; Richard Njouom; Richard O. Phillips; Richmond Gorman; Robert A. Kingsley; Rosemary Audu; Rosina A.A. Carr; Saad El Kabbaj; Saba Gargouri; Saber Masmoudi; Safietou Sankhe; Sahra Isse Mohamed; Salma MHALLA; Salome Hosch; Samar Kamal Kassim; Samar Metha; Sameh Trabelsi; Sanaa Lemriss; Sara Hassan Agwa; Sarah Wambui Mwangi; Seydou Doumbia; Sheila Makiala-Mandanda; Sherihane Aryeetey; Shymaa S. Ahmed; SIDI MOHAMED AHMED; Siham Elhamoumi; Sikhulile Moyo; Silvia Lutucuta; Simani Gaseitsiwe; Simbirie Jalloh; Soafy Andriamandimby; Sobajo Oguntope; Solene Grayo; Sonia Lekana-Douki; Sophie Prosolek; Soumeya Ouangraoua; Stephanie van Wyk; Stephen F. Schaffner; Stephen Kanyerezi; Steve AHUKA-MUNDEKE; Steven Rudder; Sureshnee Pillay; Susan Nabadda; Sylvie Behillil; Sylvie L. Budiaki; Sylvie van der Werf; Tapfumanei Mashe; Tarik Aanniz; Thabo Mohale; Thanh Le-Viet; Thirumalaisamy P. Velavan; Tobias Schindler; Tongai Maponga; Trevor Bedford; Ugochukwu J. Anyaneji; Ugwu Chinedu; Upasana Ramphal; Vincent Enouf; Vishvanath Nene; Vivianne Gorova; Wael H. Roshdy; Wasim Abdul Karim; William K. Ampofo; Wolfgang Preiser; Wonderful T. Choga; Yahaya ALI ALI AHMED; Yajna Ramphal; Yaw Bediako; Yeshnee Naidoo; Yvan Butera; Zaydah R. de Laurent; Ahmed E.O. Ouma; Anne von Gottberg; George Githinji; Matshidiso Moeti; Oyewale Tomori; Pardis C. Sabeti; Amadou A. Sall; Samuel O. Oyola; Yenew K. Tebeje; Sofonias K. Tessema; Tulio de Oliveira; Christian Happi; Richard Lessells; John Nkengasong; Eduan Wilkinson.
Preprint en Inglés | PREPRINT-MEDRXIV | ID: ppmedrxiv-22273906

RESUMEN

Investment in Africa over the past year with regards to SARS-CoV-2 genotyping has led to a massive increase in the number of sequences, exceeding 100,000 genomes generated to track the pandemic on the continent. Our results show an increase in the number of African countries able to sequence within their own borders, coupled with a decrease in sequencing turnaround time. Findings from this genomic surveillance underscores the heterogeneous nature of the pandemic but we observe repeated dissemination of SARS-CoV-2 variants within the continent. Sustained investment for genomic surveillance in Africa is needed as the virus continues to evolve, particularly in the low vaccination landscape. These investments are very crucial for preparedness and response for future pathogen outbreaks. One-Sentence SummaryExpanding Africa SARS-CoV-2 sequencing capacity in a fast evolving pandemic.

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