Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

Filters

My Custom Filters

Publication date

Text availability

Article attribute

Article type

Additional filters

Article Language

Species

Sex

Age

Other

Search Results

60 results

Filters applied: . Clear all
Results are displayed in a computed author sort order. The Publication Date timeline is not available.
Page 1
Human respiratory syncytial virus diversity and epidemiology among patients hospitalized with severe respiratory illness in South Africa, 2012-2015.
Valley-Omar Z, Tempia S, Hellferscee O, Walaza S, Variava E, Dawood H, Kahn K, McMorrow M, Pretorius M, Mtshali S, Mamorobela E, Wolter N, Venter M, von Gottberg A, Cohen C, Treurnicht FK. Valley-Omar Z, et al. Among authors: hellferscee o. Influenza Other Respir Viruses. 2022 Mar;16(2):222-235. doi: 10.1111/irv.12905. Epub 2021 Sep 16. Influenza Other Respir Viruses. 2022. PMID: 34528769 Free PMC article.
High nasopharyngeal pneumococcal density, increased by viral coinfection, is associated with invasive pneumococcal pneumonia.
Wolter N, Tempia S, Cohen C, Madhi SA, Venter M, Moyes J, Walaza S, Malope-Kgokong B, Groome M, du Plessis M, Magomani V, Pretorius M, Hellferscee O, Dawood H, Kahn K, Variava E, Klugman KP, von Gottberg A. Wolter N, et al. Among authors: hellferscee o. J Infect Dis. 2014 Nov 15;210(10):1649-57. doi: 10.1093/infdis/jiu326. Epub 2014 Jun 6. J Infect Dis. 2014. PMID: 24907383
Epidemiology of influenza virus types and subtypes in South Africa, 2009-2012.
Cohen AL, Hellferscee O, Pretorius M, Treurnicht F, Walaza S, Madhi S, Groome M, Dawood H, Variava E, Kahn K, Wolter N, von Gottberg A, Tempia S, Venter M, Cohen C. Cohen AL, et al. Among authors: hellferscee o. Emerg Infect Dis. 2014 Jul;20(7):1162-9. doi: 10.3201/eid2007.131869. Emerg Infect Dis. 2014. PMID: 24960314 Free PMC article.
Genetic diversity and molecular epidemiology of human rhinoviruses in South Africa.
Pretorius MA, Tempia S, Treurnicht FK, Walaza S, Cohen AL, Moyes J, Hellferscee O, Variava E, Dawood H, Chhagan M, Haffjee S, Madhi SA, Cohen C, Venter M. Pretorius MA, et al. Among authors: hellferscee o. Influenza Other Respir Viruses. 2014 Sep;8(5):567-73. doi: 10.1111/irv.12264. Epub 2014 Jul 3. Influenza Other Respir Viruses. 2014. PMID: 24990601 Free PMC article.
Epidemiology of viral-associated acute lower respiratory tract infection among children <5 years of age in a high HIV prevalence setting, South Africa, 2009-2012.
Cohen C, Walaza S, Moyes J, Groome M, Tempia S, Pretorius M, Hellferscee O, Dawood H, Chhagan M, Naby F, Haffejee S, Variava E, Kahn K, Nzenze S, Tshangela A, von Gottberg A, Wolter N, Cohen AL, Kgokong B, Venter M, Madhi SA. Cohen C, et al. Among authors: hellferscee o. Pediatr Infect Dis J. 2015 Jan;34(1):66-72. doi: 10.1097/INF.0000000000000478. Pediatr Infect Dis J. 2015. PMID: 25093972 Free PMC article.
Epidemiology of severe acute respiratory illness (SARI) among adults and children aged ≥5 years in a high HIV-prevalence setting, 2009-2012.
Cohen C, Walaza S, Moyes J, Groome M, Tempia S, Pretorius M, Hellferscee O, Dawood H, Haffejee S, Variava E, Kahn K, Tshangela A, von Gottberg A, Wolter N, Cohen AL, Kgokong B, Venter M, Madhi SA. Cohen C, et al. Among authors: hellferscee o. PLoS One. 2015 Feb 23;10(2):e0117716. doi: 10.1371/journal.pone.0117716. eCollection 2015. PLoS One. 2015. PMID: 25706880 Free PMC article.
Human metapneumovirus-associated severe acute respiratory illness hospitalisation in HIV-infected and HIV-uninfected South African children and adults.
Groome MJ, Moyes J, Cohen C, Walaza S, Tempia S, Pretorius M, Hellferscee O, Chhagan M, Haffejee S, Dawood H, Kahn K, Variava E, Cohen AL, Gottberg Av, Wolter N, Venter M, Madhi SA; South African Severe Acute Respiratory Illness (SARI) Surveillance Group. Groome MJ, et al. Among authors: hellferscee o. J Clin Virol. 2015 Aug;69:125-32. doi: 10.1016/j.jcv.2015.06.089. Epub 2015 Jun 18. J Clin Virol. 2015. PMID: 26209394 Free PMC article.
Case-ascertained study of household transmission of seasonal influenza - South Africa, 2013.
Iyengar P, von Mollendorf C, Tempia S, Moerdyk A, Valley-Omar Z, Hellferscee O, Martinson N, Chhagan M, McMorrow M, Gambhir M, Cauchemez S, Variava E, Masonoke K, Cohen AL, Cohen C. Iyengar P, et al. Among authors: hellferscee o. J Infect. 2015 Nov;71(5):578-86. doi: 10.1016/j.jinf.2015.09.001. Epub 2015 Sep 11. J Infect. 2015. PMID: 26366941 Free PMC article.
Legionnaires' Disease in South Africa, 2012-2014.
Wolter N, Carrim M, Cohen C, Tempia S, Walaza S, Sahr P, de Gouveia L, Treurnicht F, Hellferscee O, Cohen AL, Benitez AJ, Dawood H, Variava E, Winchell JM, von Gottberg A. Wolter N, et al. Among authors: hellferscee o. Emerg Infect Dis. 2016 Jan;22(1):131-3. doi: 10.3201/eid2201.150972. Emerg Infect Dis. 2016. PMID: 26692504 Free PMC article.
The role of influenza, RSV and other common respiratory viruses in severe acute respiratory infections and influenza-like illness in a population with a high HIV sero-prevalence, South Africa 2012-2015.
Pretorius MA, Tempia S, Walaza S, Cohen AL, Moyes J, Variava E, Dawood H, Seleka M, Hellferscee O, Treurnicht F, Cohen C, Venter M. Pretorius MA, et al. Among authors: hellferscee o. J Clin Virol. 2016 Feb;75:21-6. doi: 10.1016/j.jcv.2015.12.004. Epub 2015 Dec 19. J Clin Virol. 2016. PMID: 26741826 Free PMC article.
60 results