Browsing by Author "Adamu, Abdu A."

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    COVID-19 and routine childhood immunization in Africa : leveraging systems thinking and implementation science to improve immunization system performance
    (Elsevier, 2020-06-24) Adamu, Abdu A.; Jalo, Rabiu I.; Habonimana, Desire; Wiysonge, Charles S.
    One of the routine health services that is being disrupted by coronavirus disease 2019 (COVID-19) in Africa is childhood immunization. This is because the immunization system relies on functioning health facilities and stable communities to be effective. Its disruption increases the risk of epidemics of vaccine-preventable diseases, which could increase child mortality. Therefore, policymakers must quickly identify robust and context-specific strategies to rapidly scale-up routine immunization in order to mitigate the impact of COVID-19 on their national immunization performance. To achieve this, we propose a paradigm shift towards systems thinking and use of implementation science in immunization decision-making. Systems thinking can inform a more nuanced and holistic understanding of the interrelationship between COVID-19, its control strategies, and childhood immunization. Tools like causal loop diagrams can be used to explicitly illustrate the systems structure by identifying feedback loops. Once mapped and leverage points for interventions have been identified, implementation science can be used to guide the rapid uptake and utilization of multifaceted evidence-based innovations in complex practice settings. As Africa re-strategizes for the post-2020 era, these emerging fields could contribute significantly in accelerating progress towards universal access to vaccines for all children on the continent despite COVID-19.
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    Global, regional, and national burden of neurological disorders, 1990–2016 : a systematic analysis for the Global Burden of Disease Study 2016
    (Elsevier, 2019-05-01) Feigin, Valery L.; Nichols, Emma; Alam, Tahiya; Bannick, Marlena S.; Beghi, Ettore; Blake, Natacha; Culpepper, William J.; Dorsey, E. Ray; Elbaz, Alexis; Ellenbogen, Richard G.; Fisher, James L.; Fitzmaurice, Christina; Giussani, Giorgia; Glennie, Linda; James, Spencer L.; Johnson, Catherine Owens; Kassebaum, Nicholas J.; Logroscino, Giancarlo; Marin, Benoit; Mountjoy-Venning, W. Cliff; Nguyen, Minh; Ofori-Asenso, Richard; Patel, Anoop P.; Piccininni, Marco; Roth, Gregory A.; Steiner, Timothy J.; Stovner, Lars Jacob; Szoeke, Cassandra E. I.; Theadom, Alice; Vollset, Stein Emil; Wallin, Mitchell Taylor; Wright, Claire; Zunt, Joseph Raymond; Abbasi, Nooshin; Abd-Allah, Foad; Abdelalim, Ahmed; Abdollahpour, Ibrahim; Aboyans, Victor; Abraha, Haftom Niguse; Acharya, Dilaram; Adamu, Abdu A.; Adebayo, Oladimeji M.; Adeoye, Abiodun Moshood; Adsuar, Jose C.; Afarideh, Mohsen; Agrawal, Sutapa; Ahmadi, Alireza; Ahmed, Muktar Beshir; Aichour, Amani Nidhal; Aichour, Ibtihel; Aichour, Miloud Taki Eddine; Akinyemi, Rufus Olusola; Akseer, Nadia; Al-Eyadhy, Ayman; Al-Shahi salman, Rustam; Alahdab, Fares; Alene, Kefyalew Addis; Aljunid, Syed Mohamed; Altirkawi, Khalid; Alvis-Guzman, Nelson; Anber, Nahla Hamed; Antonio, Carl Abelardo T.; Arabloo, Jalal; Aremu, Olatunde; Arnlov, Johan; Asayesh, Hamid; Asghar, Rana Jawad; Atalay, Hagos Tasew; Awasthi, Ashish; Ayala Quintanilla, Beatriz Paulina; Ayuk, Tambe B.; Badawi, Alaa; Banach, Maciej; Banoub, Joseph Adel Mattar; Barboza, Miguel A.; Barker-Collo, Suzanne Lyn; Barnighausen, Till Winfried; Baune, Bernhard T.; Bedi, Neeraj; Behzadifar, Masoud; Behzadifar, Meysam; Bejot, Yannick; Bekele, Bayu Begashaw; Belachew, Abate Bekele; Bennett, Derrick A.; Bensenor, Isabela M.; Berhane, Adugnaw; Beuran, Mircea; Bhattacharyya, Krittika; Bhutta, Zulfiqar A.; Biadgo, Belete; Bijani, Ali; Bililign, Nigus; Bin Sayeed, Muhammad Shahdaat; Blazes, Christopher Kynrint; Brayne, Carol; Butt, Zahid A.; Campos-Nonato, Ismael R.; Cantu-Brito, Carlos; Car, Mate; Cardenas, Rosario; Carrero, Juan J.; Carvalho, Felix; Castaneda-Orjuela, Carlos A.; Castro, Franz; Catala-Lopez, Ferran; Cerin, Ester; Chaiah, Yazan; Chang, Jung-Chen; Chatziralli, Irini; Chiang, Peggy Pei-Chia; Christensen, Hanne; Christopher, Devasahayam J.; Cooper, Cyrus; Cortesi, Paolo Angelo; Costa, Vera M.; Criqui, Michael H.; Crowe, Christopher Stephen; Damasceno, Albertino Antonio Moura; Daryani, Ahmad; De la Cruz-Góngora, Vanessa; De La Hoz, Fernando Pio; De Leo, Diego; Degefa, Meaza Girma; Demoz, Gebre Teklemariam; Deribe, Kebede; Dharmaratne, Samath Dhamminda; Diaz, Daniel; Dinberu, Mesfin Tadese; Djalalinia, Shirin; Doku, David Teye; Dubey, Manisha; Dubljanin, Eleonora; Duken, Eyasu Ejeta; Edvardsson, David; El-Khatib, Ziad; Endres, Matthias; Endries, Aman Yesuf; Eskandarieh, Sharareh; Esteghamati, Alireza; Esteghamati, Sadaf; Farhadi, Farzaneh; Faro, Andre; Farzadfar, Farshad; Farzaei, Mohammad Hosein; Fatima, Batool; Fereshtehnejad, Seyed-Mohammad; Fernandes, Eduarda; Feyissa, Garumma Tolu; Filip, Irina; Fischer, Florian; Fukumoto, Takeshi; Ganji, Morsaleh; Gankpe, Fortune Gbetoho; Garcia-Gordillo, Miguel A,; Gebre, Abadi Kahsu; Gebremichael, Teklu Gebrehiwo; Gelaw, Belayneh K,; Geleijnse, Johanna M.; Geremew, Demeke; Gezae, Kebede Embaye; Ghasemi-Kasman, Maryam; Gidey, Mahari Y.; Gill, Paramjit Singh; Gill, Tiffany K.; Gnedovskaya, Elena V.; Goulart, Alessandra C.; Grada, Ayman; Grosso, Giuseppe; Guo, Yuming; Gupta, Rajeev; Haagsma, Juanita A.; Hagos, Tekleberhan B.; Haj-Mirzaian, Arvin; Haj-Mirzaian, Arya; Hamadeh, Randah R.; Hamidi, Samer; Hankey, Graeme J.; Hao, Yuantao; Haro, Josep Maria; Hassankhani, Hadi; Hassen, Hamid Yimam; Havmoeller, Rasmus; Hay, Simon I.; Hegazy, Mohamed I.; Heidari, Behnam; Henok, Andualem; Heydarpour, Fatemeh; Hoang, Chi Linh; Hole, Michael K.; Homaie Rad, Enayatollah; Hosseini, Seyed Mostafa; Hu, Guoqing; Igumbor, Ehimario U.; Ilesanmi, Olayinka Stephen; Irvani, Seyed Sina Naghibi; Islam, Sheikh Mohammed Shariful; Jakovljevic, Mihajlo; Javanbakht, Mehdi; Jha, Ravi Prakash; Jobanputra, Yash B.; Jonas, Jost B.; Jozwiak, Jacek Jerzy; Jurisson, Mikk; Kahsay, Amaha; Kalani, Rizwan; Kalkonde, Yogeshwar; Kamil, Teshome Abegaz; Kanchan, Tanuj; Karami, Manoochehr; Karch, Andre; Karimi, Narges; Kasaeian, Amir; Kassa, Tesfaye Dessale; Kassa, Zemenu Yohannes; Kaul, Anil; Kefale, Adane Teshome; Keiyoro, Peter Njenga; Khader, Yousef Saleh; Khafaie, Morteza Abdullatif; Khalil, Ibrahim A.; Khan, Ejaz Ahmad; Khang, Young-Ho; Khazaie, Habibolah; Kiadaliri, Aliasghar A.; Kiirithio, Daniel N.; Kim, Anthony S.; Kim, Daniel; Kim, Young-Eun; Kim, Yun Jin; Kisa, Adnan; Kokubo, Yoshihiro; Koyanagi, Ai; Krishnamurthi, Rita V.; Kuate Defo, Barthelemy; Kucuk Bicer, Burcu; Kumar, Manasi; Lacey, Ben; Lafranconi, Alessandra; Lansingh, Van C.; Latifi, Arman; Leshargie, Cheru Tesema; Li, Shanshan; Liao, Yu; Linn, Shai; Lo, Warren David; Lopez, Jaifred Christian F.; Lorkowski, Stefan; Lotufo, Paulo A.; Lucas, Robyn M.; Lunevicius, Raimundas; Mackay, Mark T.; Mahotra, Narayan Bahadur; Majdan, Marek; Majdzadeh, Reza; Majeed, Azeem; Malekzadeh, Reza; Malta, Deborah Carvalho; Manafi, Navid; Mansournia, Mohammad Ali; Mantovani, Lorenzo Giovanni; Marz, Winfried; Mashamba-Thompson, Tivani Phosa; Massenburg, Benjamin Ballard; Mate, Kedar K. V.; McAlinden, Colm; McGrath, John J.; Mehta, Varshil; Meier, Toni; Meles, Hagazi Gebre; Melese, Addisu; Memiah, Peter T. N.; Memish, Ziad A.; Mendoza, Walter; Mengistu, Desalegn Tadese; Mengistu, Getnet; Meretoja, Atte; Meretoja, Tuomo J.; Mestrovic, Tomislav; Miazgowski, Bartosz; Miazgowski, Tomasz; Miller, Ted R.; Mini, G. K.; Mirrakhimov, Erkin M.; Moazen, Babak; Mohajer, Bahram; Mezerji, Naser Mohammad Gholi; Mohammadi, Moslem; Mohammadi-Khanaposhtani, Maryam; Mohammadibakhsh, Roghayeh; Mohammadnia-Afrouzi, Mousa; Mohammed, Shafiu; Mohebi, Farnam; Mokdad, Ali H.; Monasta, Lorenzo; Mondello, Stefania; Moodley, Yoshan; Moosazadeh, Mahmood; Moradi, Ghobad; Moradi-Lakeh, Maziar; Moradinazar, Mehdi; Moraga, Paula; Moreno Velasquez, Ilais; Morrison, Shane Douglas; Mousavi, Seyyed Meysam; Muhammed, Oumer Sada; Muruet, Walter; Musa, Kamarul Imran; Mustafa, Ghulam; Naderi, Mehdi; Nagel, Gabriele; Naheed, Aliya; Naik, Gurudatta; Najafi, Farid; Nangia, Vinay; Negoi, Ionut; Negoi, Ruxandra Irina; Newton, Charles Richard James; Ngunjiri, Josephine W.; Nguyen, Cuong Tat; Nguyen, Long Hoang; Ningrum, Dina Nur Anggraini; Nirayo, Yirga Legesse; Nixon, Molly R.; Norrving, Bo; Noubiap, Jean Jacques; Nourollahpour Shiadeh, Malihe; Nyasulu, Peter S.; Ogbo, Felix Akpojene; Oh, In-Hwan; Olagunju, Andrew T.; Olagunju, Tinuke O.; Olivares, Pedro R.; Onwujekwe, Obinna E.; Oren, Eyal; Owolabi, Mayowa Ojo; P A, Mahesh; Pakpour, Amir H.; Pan, Wen-Harn; Panda-Jonas, Songhomitra; Pandian, Jeyaraj Durai; Patel, Sangram Kishor; Pereira, David M.; Petzold, Max; Pillay, Julian David; Piradov, Michael A.; Polanczyk, Guilherme V.; Polinder, Suzanne; Postma, Maarten J.; Poulton, Richie; Poustchi, Hossein; Prakash, Swayam; Prakash, V.; Qorbani, Mostafa; Radfar, Amir; Rafay, Anwar; Rafiei, Alireza; Rahim, Fakher; Rahimi-Movaghar, Vafa; Rahman, Mahfuzar; Rahman, Mohammad Hifz Ur; Rahman, Muhammad Aziz; Rajati, Fatemeh; Ram, Usha; Ranta, Anna; Rawaf, David Laith; Rawaf, Salman; Reinig, Nickolas; Reis, Cesar; Renzaho, Andre M. N.; Resnikoff, Serge; Rezaeian, Shahab; Rezai, Mohammad Sadegh; Rios Gonzalez, Carlos Miguel; Roberts, Nicholas L. S.; Roever, Leonardo; Ronfani, Luca; Roro, Elias Merdassa; Roshandel, Gholamreza; Rostami, Ali; Sabbagh, Parisa; Sacco, Ralph L.; Sachdev, Perminder S.; Saddik, Basema; Safari, Hosein; Safari-Faramani, Roya; Safi, Sare; Safiri, Saeid; Sagar, Rajesh; Sahathevan, Ramesh; Sahebkar, Amirhossein; Sahraian, Mohammad Ali; Salamati, Payman; Salehi Zahabi, Saleh; Salimi, Yahya; Samy, Abdallah M.; Sanabria, Juan; Santos, Itamar S.; Santric Milicevic, Milena M.; Sarrafzadegan, Nizal; Sartorius, Benn; Sarvi, Shahabeddin; Sathian, Brijesh; Satpathy, Maheswar; Sawant, Arundhati R.; Sawhney, Monika; Schneider, Ione J. C.; Schottker, Ben; Schwebel, David C.; Seedat, Soraya, 1966-; Sepanlou, Sadaf G.; Shabaninejad, Hosein; Shafieesabet, Azadeh; Shaikh, Masood Ali; Shakir, Raad A.; Shams-Beyranvand, Mehran; Shamsizadeh, Morteza; Sharif, Mehdi; Sharif-Alhoseini, Mahdi; She, Jun; Sheikh, Aziz; Sheth, Kevin N.; Shigematsu, Mika; Shiri, Rahman; Shirkoohi, Reza; Shiue, Ivy; Siabani, Soraya; Siddiqi, Tariq J.; Sigfusdottir, Inga Dora; Sigurvinsdottir, Rannveig; Silberberg, Donald H.; Silva, Joao Pedro; Silveira, Dayane Gabriele Alves; Singh, Jasvinder A.; Sinha, Dhirendra Narain; Skiadaresi, Eirini; Smith, Mari; Sobaih, Badr Hasan; Sobhani, Soheila; Soofi, Moslem; Soyiri, Ireneous N.; Sposato, Luciano A.; Stein, Dan J.; Stein, Murray B.; Stokes, Mark A.; Sufiyan, Mu'awiyyah Babale; Sykes, Bryan L.; Sylaja, Pn; Tabarés-Seisdedos, Rafael; Te Ao, Braden James; Tehrani-Banihashemi, Arash; Temsah, Mohamad-Hani; Temsah, Omar; Thakur, Jarnail Singh; Thrift, Amanda G.; Topor-Madry, Roman; Tortajada-Girbés, Miguel; Tovani-Palone, Marcos Roberto; Tran, Bach Xuan; Tran, Khanh Bao; Truelsen, Thomas Clement; Tsadik, Afewerki Gebremeskel; Tudor Car, Lorainne; Ukwaja, Kingsley Nnanna; Ullah, Irfan; Usman, Muhammad Shariq; Uthman, Olalekan A.; Valdez, Pascual R.; Vasankari, Tommi Juhani; Vasanthan, Rajagopalan; Veisani, Yousef; Venketasubramanian, Narayanaswamy; Violante, Francesco S.; Vlassov, Vasily; Vosoughi, Kia; Vu, Giang Thu; Vujcic, Isidora S.; Wagnew, Fasil Shiferaw; Waheed, Yasir; Wang, Yuan-Pang; Weiderpass, Elisabete; Weiss, Jordan; Whiteford, Harvey A.; Wijeratne, Tissa; Winkler, Andrea Sylvia; Wiysonge, Charles Shey; Wolfe, Charles D. A.; Xu, Gelin; Yadollahpour, Ali; Yamada, Tomohide; Yano, Yuichiro; Yaseri, Mehdi; Yatsuya, Hiroshi; Yimer, Ebrahim M.; Yip, Paul; Yisma, Engida; Yonemoto, Naohiro; Yousefifard, Mahmoud; Yu, Chuanhua; Zaidi, Zoubida; Zaman, Sojib Bin; Zamani, Mohammad; Zandian, Hamed; Zare, Zohreh; Zhang, Yunquan; Zodpey, Sanjay; Naghavi, Mohsen; Murray, Christopher J. L.; Vos, Theo; Gupta, Rahul
    Background: Neurological disorders are increasingly recognised as major causes of death and disability worldwide. The aim of this analysis from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2016 is to provide the most comprehensive and up-to-date estimates of the global, regional, and national burden from neurological disorders. Methods: We estimated prevalence, incidence, deaths, and disability-adjusted life-years (DALYs; the sum of years of life lost [YLLs] and years lived with disability [YLDs]) by age and sex for 15 neurological disorder categories (tetanus, meningitis, encephalitis, stroke, brain and other CNS cancers, traumatic brain injury, spinal cord injury, Alzheimer's disease and other dementias, Parkinson's disease, multiple sclerosis, motor neuron diseases, idiopathic epilepsy, migraine, tension-type headache, and a residual category for other less common neurological disorders) in 195 countries from 1990 to 2016. DisMod-MR 2.1, a Bayesian meta-regression tool, was the main method of estimation of prevalence and incidence, and the Cause of Death Ensemble model (CODEm) was used for mortality estimation. We quantified the contribution of 84 risks and combinations of risk to the disease estimates for the 15 neurological disorder categories using the GBD comparative risk assessment approach. Findings: Globally, in 2016, neurological disorders were the leading cause of DALYs (276 million [95% UI 247–308]) and second leading cause of deaths (9·0 million [8·8–9·4]). The absolute number of deaths and DALYs from all neurological disorders combined increased (deaths by 39% [34–44] and DALYs by 15% [9–21]) whereas their age-standardised rates decreased (deaths by 28% [26–30] and DALYs by 27% [24–31]) between 1990 and 2016. The only neurological disorders that had a decrease in rates and absolute numbers of deaths and DALYs were tetanus, meningitis, and encephalitis. The four largest contributors of neurological DALYs were stroke (42·2% [38·6–46·1]), migraine (16·3% [11·7–20·8]), Alzheimer's and other dementias (10·4% [9·0–12·1]), and meningitis (7·9% [6·6–10·4]). For the combined neurological disorders, age-standardised DALY rates were significantly higher in males than in females (male-to-female ratio 1·12 [1·05–1·20]), but migraine, multiple sclerosis, and tension-type headache were more common and caused more burden in females, with male-to-female ratios of less than 0·7. The 84 risks quantified in GBD explain less than 10% of neurological disorder DALY burdens, except stroke, for which 88·8% (86·5–90·9) of DALYs are attributable to risk factors, and to a lesser extent Alzheimer's disease and other dementias (22·3% [11·8–35·1] of DALYs are risk attributable) and idiopathic epilepsy (14·1% [10·8–17·5] of DALYs are risk attributable). Interpretation: Globally, the burden of neurological disorders, as measured by the absolute number of DALYs, continues to increase. As populations are growing and ageing, and the prevalence of major disabling neurological disorders steeply increases with age, governments will face increasing demand for treatment, rehabilitation, and support services for neurological disorders. The scarcity of established modifiable risks for most of the neurological burden demonstrates that new knowledge is required to develop effective prevention and treatment strategies.
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    A multilevel analysis of the determinants of missed opportunities for vaccination among children attending primary healthcare facilities in Kano, Nigeria : findings from the pre-implementation phase of a collaborative quality improvement programme
    (Public Library of Science, 2019-07-10) Adamu, Abdu A.; Uthman, Olalekan A.; Gadanya, Muktar A.; Adetokunboh, Olatunji O.; Wiysonge, Charles S.
    Background: We aimed to determine the factors that are responsible for missed opportunities for vaccination (MOV) among children aged 0–23 months attending primary health care (PHC) facilities in Nassarawa, Kano State, Nigeria. Methods: This cross-sectional study was conducted in the pre-implementation phase of a quality improvement programme. One-stage cluster sampling technique was employed. Data were collected from caregivers of children aged 0–23 months in ten randomly selected PHC facilities in Nassarawa Local Government Area of Kano State. Semi-structured, interviewer administered questionnaires were used. Frequencies and percentages were used to summarize the data. Multilevel logistic regression model with fixed effect and random effect component was fitted to obtain measures of association and variation respectively. Results: Caregivers of 675 children responded. Among these children, the prevalence of MOV (for at least one antigen) was 36.15%. MOV (for individual antigens) was highest for inactivated polio vaccine followed by measles vaccine. The random effect model yielded an intraclass correlation coefficient of 9.60% for the empty model. The fixed effect model revealed that MOV was more likely among children that were accompanying a caregiver to the health facility (OR = 2.86, 95%CrI: 1.28 to 5.80) compared to those that were visiting the health facility for medical consultation. Failure to receive vaccination on the day of health facility visit (OR = 2.32, 95%CrI: 1.12 to 4.12) and visiting a clinic with three or more vaccinators (OR = 12.91, 95%CrI: 4.82 to 27.14) increased the likelihood of MOV. Conclusion: The study identified important local factors that are responsible for MOV which can be addressed in the QI programme.