Publications by authors named "Joseph Asamoah-Frimpong"

Article Synopsis
  • Circulating Vaccine-Derived Poliovirus Type 2 (cVDPV2) was found in sewage and stool samples from children with acute flaccid paralysis in northern Ghana, prompting an investigation into the outbreak.
  • A total of 18 cases of cVDPV2 were confirmed across three regions, linked to a strain from Nigeria, highlighting issues in water quality, sanitation, and community health practices.
  • The outbreak marked the first incidence of cVDPV2 in Ghana since 1996 but was controlled through enhanced surveillance and vaccination campaigns, including the Monovalent Oral Polio Vaccine 2 (mOPV2) and a nationwide IPV catch-up campaign.
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Background: Acute Flaccid Paralysis (AFP) surveillance is the gold standard in the polio eradication initiative. The environmental component of polio surveillance can detect circulating Polioviruses from sewage without relying on clinical presentation. The effectiveness of the Environmental Surveillance (ES) is crucial to global polio eradication.

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Background: The test, treat, and track (T3) strategy is directed at ensuring diagnosis and prompt treatment of uncomplicated malaria cases. Adherence to T3 strategy reduces wrong treatment and prevents delays in treating the actual cause of fever that may otherwise lead to complications or death. Data on adherence to all three aspects of the T3 strategy is sparse with previous studies focusing on the testing and treatment aspects.

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Ghana is a yellow fever-endemic country and experienced a vaccine-derived polio outbreak in July 2019. A reactive polio vaccination campaign was conducted in September 2019 and preventive yellow fever campaign in November 2020. On March 12, 2020, Ghana confirmed its first COVID-19 cases.

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Background: The World Health Organization's case definition for influenza-like illness (ILI) includes a measured temperature of ≥38°C. We conducted this study to assess the effect of antipyretics on performance of ILI surveillance in Ghana.

Methods: A cross-sectional study was conducted in two districts of Ghana from September 2013 to May 2014.

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Background: With over 80% of children worldwide vaccinated, concerns about vaccine safety continues to be a public health issue. Ghana's Adverse Events Following Immunization surveillance started in 1978 with the objective to promptly detect and manage AEFI cases either real or perceived. Periodic evaluation of the surveillance system is critical for optimal performance; hence we evaluated the system to assess its attributes, usefulness and system's performance in meeting its objectives.

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Ghana Health Service (GHS) has strengthened community-based surveillance (CBS) to facilitate early detection and rapid reporting of health events of all origins. Since June 2017, GHS has employed an event-based surveillance approach at the community level in a phased manner. CBS coverage has broadened from 2 to 30 districts across Ghana.

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Article Synopsis
  • * A Data Quality Assessment (DQA) is necessary to identify the strengths and weaknesses in Liberia's disease surveillance information system and enhance the accuracy and reliability of health data.
  • * The pilot assessment in Montserrado County highlighted limitations in data usage for decision-making at lower levels of health governance, with only 23% of health facilities having a dedicated phone for reporting and a notable absence of mobile network access in some locations.
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Pertussis is a vaccine preventable disease (VPD) monitored by the World Health Organization (WHO). Despite a long-established Pertussis immunization system, the re-emergence of the disease in some countries stressed the need to have well-trained field epidemiologists at the forefront in the fight against these VPDs, especially during an outbreak. Practical, hands-on training is useful for clearer understanding of the principles and development of competencies relevant to outbreak investigation, which will enhance field practice; case method training using realistic public health scenarios helps trainees put into practice learned theory.

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Globally, even though improvements have been made to effective surveillance and response, communicable diseases such as cholera remain high priorities for national health programs, especially in Africa. High-quality surveillance information coupled with adequate laboratory facilities are effective in curbing outbreaks from such diseases, ultimately reducing morbidity and mortality. One way of building this capacity is through simulation of response to such health events.

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Outbreak investigation is a key component of public health training. A good outbreak investigation can go beyond determining the causative agent by recommending policies to be formulated by policy makers. This case study simulates a real-life investigation of pyrexia of unknown origin in Shamva District, Zimbabwe, during the period of September to October 2015.

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Article Synopsis
  • - The investigation of foodborne outbreaks needs a variety of skills, and many cases suffer from insufficient expertise among investigators.
  • - This case study focuses on a shellfish poisoning outbreak in Wete, Zanzibar, in July 2015, led by the Tanzania Field Epidemiology Training Program.
  • - It aims to enhance training for public health practitioners, with a facilitation time of about 3 hours in a classroom setting.
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Investigating an outbreak of disease requires mastery of a set of skills and collaboration among different cadres of health workers. Although you want to focus on a specific disease, you need to keep your mind open to possibilities. This case study is based on investigation of an outbreak of rashes suspected to be measles but which proved to be otherwise.

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Schistosomiasis is endemic in some parts of northern Namibia and there is a control program in the country with the use of mass drug administration to control and prevent the disease. On the 1st March, 2016, there was a report of bloody urine among primary school pupils in a school in Omusati region, Namibia. A team of health professionals was dispatched to investigate.

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The occurrence of communicable diseases highlights the need to have well-trained field epidemiologists at the forefront in the fight against these diseases, especially during an outbreak. Training for outbreak investigation is most effective when participants can develop their competencies in a practical exercise. This is a simulation of the steps in meningitis outbreak investigation conducted in Ghana in February 2016 by Ghana Field Epidemiology Training Programme (FELTP) residents and the public health technical team of the Nkoranza South Municipality as a field epidemiologist.

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Sub-Saharan Africa reports repeated outbreaks of measles, a vaccine preventable disease, which is notifiable under the Integrated Disease Surveillance and Response strategy in Nigeria. Nigeria has reported several outbreaks of measles in the last three years. Poor immunization coverage and weak health systems have been related with measles.

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On April 25, 2017, the Sinoe County Health Team (CHT) notified the Liberia Ministry of Health (MoH) and the National Public Health Institute of Liberia of an unknown illness among 14 persons that resulted in eight deaths in Sinoe County. On April 26, the National Rapid Response Team and epidemiologists from CDC, the World Health Organization (WHO) and the African Field Epidemiology Network (AFENET) in Liberia were deployed to support the county-led response. Measures were immediately implemented to identify all cases, ascertain the cause of illness, and control the outbreak.

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Anthrax is hyper-endemic in West Africa. Despite the effectiveness of livestock vaccines in controlling anthrax, underreporting, logistics, and limited resources makes implementing vaccination campaigns difficult. To better understand the geographic limits of anthrax, elucidate environmental factors related to its occurrence, and identify human and livestock populations at risk, we developed predictive models of the environmental suitability of anthrax in Ghana.

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The government of Zimbabwe began providing antiretroviral therapy (ART) to People Living with HIV/AIDS (PLHIV) in public institutions in 2004. In Midlands province two clinics constituted the most active HIV care service points, with patients being followed up through a comprehensive patient monitoring and tracking system which captured specific patient variables and outcomes over time. The data from 2006 to 2011 were subjected to analysis to answer specific research questions and this case study is based on that analysis.

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The laboratory plays a major role in surveillance, including confirming the start and end of an outbreak. Knowing the causative agent for an outbreak informs the development of response strategies and management plans for a public health event. However, issues and challenges may arise that limit the effectiveness or efficiency of laboratories in surveillance.

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Article Synopsis
  • * To identify challenges that affect data quality, conducting a data quality audit is essential, as demonstrated in this case study.
  • * The case study simulates a data quality audit in a health facility for public health trainees, helping reinforce theoretical understanding of data quality and auditing in about 2.5 hours.
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An essential component of a public health surveillance system is its ability to detect priority diseases which fall within the mandate of public health officials at all levels. Early detection, reporting and response to public health events help to reduce the burden of mortality and morbidity on communities. Analysis of reliable surveillance data provides relevant information which can enable implementation of timely and appropriate public health interventions.

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This case study is based on a real-life outbreak investigation undertaken in Mozambique in 1981. This case study describes and promotes one particular approach to unknown disease outbreak investigation. Investigational procedures, however, may vary depending on location and outbreak.

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The emergence and re-emergence of infectious diseases highlights the need to have well-trained field epidemiologists who will be at the forefront in the fight against these diseases, especially during an outbreak. Training for outbreak investigation is most effective when participants can develop their competencies in a practical exercise. To that end, this case study was based on a measles outbreak investigation conducted in Liberia during October 2015 by Liberia Frontline Field Epidemiology Training Program (FETP) residents, simulating steps to perform outbreak investigation in a real-life situation as a field epidemiologist.

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Background: Influenza vaccination is recommended by the World Health Organization for high risk groups, yet few data exist on influenza disease burden in West Africa.

Methods: We estimated medically attended influenza-associated illness rates among residents of Shai-Osudoku and Ningo Pram-Pram Districts (SONPD), Ghana. From May 2013 to April 2015, we conducted prospective surveillance for severe acute respiratory illness (SARI) and influenza-like illness (ILI) in 17 health facilities.

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