Publications by authors named "Mahamud A"

Article Synopsis
  • Orange terpene (OT) was tested for its ability to eliminate biofilms of the foodborne pathogen E. coli from various food contact surfaces, showing significant reduction on stainless steel, PET, LDPE, and rubber.
  • OT was effective in inhibiting biofilm development on beef surfaces at a concentration of 0.13%, with notable reductions in both newly formed and existing biofilms.
  • Sensory evaluations indicated that while OT slightly changed the odor of beef, it did not negatively affect its color or texture, underscoring OT’s potential as an antibacterial agent in the food industry.
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Enzymes play a vital role in baking, providing significant benefits from dough development to extending shelf life, which enhances product quality and consistency. Acting as biological catalysts, enzymes such as proteases and amylases break down proteins and starches, modifying dough rheology and improving fermentation. Lipases and oxidases further refine dough texture through emulsification and oxidation, while lipases also produce fatty acid derivatives during fermentation, contributing to the flavor and aroma of baked goods.

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  • * The WHO published the first COVID-19 Weekly Epidemiological Update on August 17, 2020, and continued until the final edition on September 1, 2023, after which updates transitioned to a comprehensive format every 4 weeks.
  • * The article reviews the WEU's data collection and publication process, its global impact, and offers recommendations to improve collaboration and information sharing for future health crises.
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  • WHO collaborates with countries to manage acute public health events by providing reliable information through Disease Outbreak News (DON) reports.
  • Since 1996, WHO has published over 3000 DON reports, focusing on major health threats like Ebola and cholera, with significant public interest highlighted by 2.6 million visits per year.
  • The structure of DON reports has evolved to enhance clarity and detail, reflecting WHO's ongoing efforts to improve how they communicate health information globally.
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  • The COVID-19 pandemic has seen the emergence of numerous SARS-CoV-2 variants, impacting global health through increased infections and hospitalizations.
  • Early detection and effective surveillance of these variants are crucial for understanding their health risks and guiding public health responses.
  • The article outlines past variants, their genetic evolution, and the importance of integrating genomic data with epidemiological insights for ongoing and future public health initiatives.
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Aging and aging-related chronic disorders are one of the principal causes of death worldwide. The prevalence of these disorders is increasing gradually and globally. Considering this unwavering acceleration of the global burden, seeking alternatives to traditional medication to prevent the risk of aging disorders is needed.

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Article Synopsis
  • - The World Health Organization (WHO) has established a strong public health intelligence (PHI) system to detect and assess acute global health threats, guided by the International Health Regulations (2005).
  • - PHI involves four main steps: detection, verification, risk assessment, and reporting, which are carried out continuously at WHO's headquarters and regional offices.
  • - As public health risks increase globally, a diverse team is essential for effective PHI operations, making it a critical component of the global health framework.
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  • The WHO developed an alert system from May 2021 to June 2022 to assess and respond to public health risks related to COVID-19, analyzing data from 237 countries.
  • A three-stage mixed methods approach was utilized to predict future deaths and adjust alert levels based on context, leading to the creation of a watchlist for countries needing assistance.
  • The system facilitated significant support, including over $27 million in emergency funding and medical supplies, while demonstrating the potential for similar future applications in managing outbreaks.
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Background: In May 2022, several countries with no history of sustained community transmission of mpox (formerly known as monkeypox) notified WHO of new mpox cases. These cases were soon followed by a large-scale outbreak, which unfolded across the world, driven by local, in-country transmission within previously unaffected countries. On July 23, 2022, WHO declared the outbreak a Public Health Emergency of International Concern.

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Article Synopsis
  • COVID-19, caused by SARS-CoV-2, was declared a public health emergency in January 2020, with early studies showing that over 80% of deaths were among individuals aged 60 and older.
  • The World Health Organization developed strategies to prioritize vaccine distribution, emphasizing the importance of vaccinating at-risk populations, particularly older adults, aiming for full vaccination coverage.
  • Data analysis revealed that people aged 60 and above made up more than 80% of COVID-19 deaths globally, with significant mortality impact seen in lower and middle-income countries, highlighting the urgency for effective vaccine rollout.*
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The coronavirus disease (COVID-19) presented a unique opportunity for the World Health Organization (WHO) to utilise public health intelligence (PHI) for pandemic response. WHO systematically captured mainly unstructured information (e.g.

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In this work, Ni−W/B nanocomposite coatings were successfully fabricated on low carbon steel by using pulse current (PC) electrodeposition. The effects of the frequency and duty cycle on the microstructure, wear resistance, and microhardness of the coatings were studied. The results obtained show that the distribution and content of boron particles (>4 wt.

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Background: Since July 2019, Pakistan and Afghanistan have been facing an outbreak of serotype-2 circulating vaccine derived poliovirus (cVDPV2) in addition to continued transmission of serotype-1 wild poliovirus (WPV1) and SARS-CoV-2 in 2020. Understanding the risks of cVDPV2 transmission due to pause of global vaccination efforts and the impact of potential vaccination response strategies in the current context of COVID-19 mitigation measures is critical.

Methods: We developed a stochastic, geographically structured mathematical model of cVDPV2 transmission which captures both mucosal and humoral immunity separately and allows for reversion of serotype-2 oral polio vaccine (OPV2) virus to cVDPV2 following vaccine administration.

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Background: Stopping serotype 1 wild poliovirus transmission in Pakistan and Afghanistan requires ensuring all children <5 years of age are repeatedly vaccinated, including the large proportion living in mobile groups. Vaccinating children living in high-risk mobile populations (HRMPs) remains a priority for the polio programme.

Methods: In 2017-2018, group-level censuses were conducted in 43 districts of Pakistan, gathering information for all HRMP children <5 years of age residing in settlements.

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Introduction: The prevalence of smoking among Somali Muslim male immigrants residing in Minnesota is estimated at 44%, however smoking reduction is common during the month of Ramadan. This study evaluated the feasibility and impact of a religiously tailored text message intervention delivered during Ramadan to encourage smoking reduction among Somali Muslim men who smoke.

Methods: Fifty Somali men were recruited.

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Copper (Cu) pollution of agricultural land is a major threat to crop production. Exogenous chemical treatment is an easily accessible and rapid approach to remediate metal toxicity, including Cu toxicity in plants. We compared the effects of ascobin (ASC; ascorbic acid:citric acid at 2:1) and glutathione (GSH) in mitigation of Cu toxicity in rice.

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We report early findings from COVID-19 cases in Brunei suggesting a remarkably high proportion of asymptomatic (12%) and presymptomatic (30%) cases. This proportion was even higher in imported cases. These have implications for measures to prevent onward local transmission and should prompt reconsideration of current testing protocols and safe de-escalation of social distancing measures.

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The first large-scale vaccination campaign using needle-free jet injectors to administer fractional doses of inactivated poliovirus vaccine (fIPV) was conducted in Karachi, Pakistan, in February 2019. Data on acceptability of jet injectors were collected from 610 vaccinators and 4898 caregivers during the first four days of the campaign. Of those with prior needle and syringe experience, both vaccinators and caregivers expressed a strong preference for jet injectors (578/592 [97.

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Afghanistan and Pakistan are the only countries that continue to confirm ongoing wild poliovirus type 1 (WPV1) transmission (1). During January 2018-September 2019 the number of WPV1 cases in Pakistan increased, compared with the number during the previous 4 years. This report updates previous reports on Pakistan's polio eradication activities, progress, and challenges (2,3).

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Introduction: Somali Muslim male immigrants in Minnesota have a high prevalence of smoking, estimated at 44%, compared with the average smoking rate for adults in the United States (14%). However, the literature has reported spontaneous reductions of smoking during Ramadan. This study sought to gather the views of Somali Muslim men on how faith impacts their smoking, and determine what messaging to incorporate into a tailored text messages intervention that draws on the Muslim faith beliefs and practices during Ramadan to promote smoking cessation.

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Background: The polio environmental surveillance (ES) system has been an incredible tool for advancing polio eradication efforts because of its ability to highlight the spatial and temporal extent of poliovirus circulation. While ES often outperforms, or is more sensitive than AFP surveillance, the sensitivity of the ES system has not been well characterized. Fundamental uncertainty of ES site sensitivity makes it difficult to interpret results from ES, particularly negative results.

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Among the three wild poliovirus (WPV) serotypes, only WPV type 1 (WPV1) has been reported in polio cases or detected from environmental surveillance globally since 2012. Pakistan remains one of only three countries worldwide (the others are Afghanistan and Nigeria) that has never had interrupted WPV1 transmission. This report documents Pakistan's activities and progress toward polio eradication during January 2017-September 2018 and updates previous reports (1,2).

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Pakistan began using inactivated poliovirus vaccine alongside oral vaccine in mass campaigns to accelerate eradication of wild-type poliovirus in 2014. Using case-based and environmental surveillance data for January 2014-October 2017, we found that these campaigns reduced wild-type poliovirus detection more than campaigns that used only oral vaccine.

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Article Synopsis
  • Poliovirus environmental surveillance (ES) is essential for tracking silent circulation of the virus, especially as clinical cases decline, and this study compares the effectiveness of a new bag-mediated filtration system (BMFS) to the traditional two-phase separation method.
  • In a study conducted in Pakistan from February to November 2016 with 117 samples, BMFS showed significantly better detection rates for both vaccine-related and wild poliovirus types compared to the two-phase method.
  • The enhanced detection in BMFS is attributed to a larger volume of water being tested (1620 mL vs. 150 mL), establishing it as a more effective technique for monitoring poliovirus in endemic regions.
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Following the declaration of eradication of wild poliovirus (WPV) type 2 in September 2015, trivalent oral poliovirus vaccine (tOPV) was withdrawn globally to reduce the risk for type 2 vaccine-derived poliovirus (VDPV2) transmission; all countries implemented a synchronized switch to bivalent OPV (type 1 and 3) in April 2016 (1,2). Any isolation of VDPV2 after the switch is to be treated as a potential public health emergency and might indicate the need for supplementary immunization activities (3,4). On August 9, 2016, VDPV2 was isolated from a sewage sample taken from an environmental surveillance site in Hyderabad, Sindh province, Pakistan.

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