Historical dataset of population level and growth rate for the Ibadan, Nigeria metro area from 1950 to 2025.

Cairo, in Egypt, ranked as the most populated city in Africa as of 2025, with an estimated population of over 23 million inhabitants living in Greater Cairo. Kinshasa, in Congo, and Lagos, in Nigeria, followed with some 17.8 million and 17.2 million, respectively. Among the 15 largest cities in the continent, another one, Kano, was located in Nigeria, the most populous country in Africa. Population density trends in Africa As of 2023, Africa exhibited a population density of 50.1 individuals per square kilometer. Since 2000, the population density across the continent has been experiencing a consistent annual increment. Projections indicated that the average population residing within each square kilometer would rise to approximately 58.5 by the year 2030. Moreover, Mauritius stood out as the African nation with the most elevated population density, exceeding 627 individuals per square kilometre. Mauritius possesses one of the most compact territories on the continent, a factor that significantly influences its high population density. Urbanization dynamics in Africa The urbanization rate in Africa was anticipated to reach close to 45.5 percent in 2024. Urbanization across the continent has consistently risen since 2000, with urban areas accommodating only around a third of the total population then. This trajectory is projected to continue its rise in the years ahead. Nevertheless, the distribution between rural and urban populations shows remarkable diversity throughout the continent. In 2024, Gabon and Libya stood out as Africa’s most urbanized nations, each surpassing 80 percent urbanization. As of the same year, Africa's population was estimated to expand by 2.27 percent compared to the preceding year. Since 2000, the population growth rate across the continent has consistently exceeded 2.3 percent, reaching its pinnacle at 2.63 percent in 2013. Although the growth rate has experienced a deceleration, Africa's population will persistently grow significantly in the forthcoming years.

Factors associated with previous report of giving or receiving oral sex among sexually active men and women from the general population in two communities in Ibadan, Nigeria (N = 626).

As of January 2021, the University of Ibadan was the leading University in Nigeria. It was founded in 1948 and is the oldest university in the Country. Covenant University Ota, founded in 2002 in Ogun, followed in the ranking. Furthermore, there were 170 universities in Nigeria as of 2020, of which 79 are private institutions. This ranking is mainly based on webometrics, which is the web visibility of the academic institutions.

Between 1948 and 1970, six universities were founded in Nigeria. All of them were federal universities. Over the last decades, the number of universities founded in the country increased considerably. During the last 20 years, the number of private universities grew significantly.

Some of Nigeria's oldest universities are the University of Ibadan, the University of Nigeria, the Obafemi Awolowo University, and the University of Lagos. These four institutions were founded between the end of the 1940s and the beginning of the 1960s.

FST distance (Latter et al., 1972).*Allele frequency data for the c.371G>C polymorphism for these populations were retrieved from the International HapMap Project database (http://hapmap.ncbi.nlm.nih.gov/cgi-perl/snp_details_phase3?name=rs2073342&source=hapmap28_B36&tmpl=snp_details_phase3). YRI: Yoruba in Ibadan, Nigeria; CEU: (Utah residents with northern and western European ancestry from the Centre d'Etude du Polymorphisme Humain [CEPH]); CHB: Han Chinese from Beijing, China and JPT: Japanese.

Nigeria ranks as the sixth country globally and the first in Africa with the highest burden of tuberculosis (TB) infection. The emergence and spread of multidrug-resistant TB (MDR-TB) strains have posed significant challenges to effective disease management in the country. In this study, 55 Mycobacterium tuberculosis (MTB) isolates from patients attending a hospital in Ibadan city (Nigeria) were selected. MTB isolates were analyzed using PCR amplification of gene fragments associated with antibiotic resistance, followed by Sanger sequencing and bioinformatics analysis. Additionally, MIRU-VNTR genotyping was performed to address population structure and transmission dynamics. Results show an association between mutations in the rpoB, inhA and gyrA genes and phenotypic resistance to rifampicin, isoniazide and fluoroquinolones in a significant percentage of the MTB isolates. However, an extended panel of genes would enable a better characterization of antibiotic resistance. The population structure of MTB in Ibadan, as determined by using MIRU-VNTR, revealed that 96.1% of the strains belong to lineage 4, distributed in the following sublineages: Uganda I (47.1%), LAM (21.6%), Cameroon (17.6%), and Ghana (9.8%). Meanwhile, 3.9% of the strains correspond to lineage 5 (L5), West African-1 sub-lineage. The population structure was very heterogeneous and no active transmission clusters were detected. Overall, this pilot study demonstrated the utility of cost-effective molecular tools in enhancing TB surveillance and control programs in settings where whole-genome sequencing (WGS) is still an economical challenge.

Socio demographic characteristics of infants whose immunization records were studied for timeliness and completion in selected urban slums of Ibadan, Nigeria.

Socio-demographic characteristics of students in each year of entry at the University of Ibadan from 2009–2018.