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The purpose of this study is to investigate how COVID-19 induced virtual teaching-learning methods and lecture content accessibility among undergraduates in university in Nigeria using online mode such as Cisco Jabber, Zoom, Google meet, Adobe Connect e.t.c. Virtual teaching-learning methods are becoming more popular in Nigerian Universities due to the outbreak of COVID -19. Questionnaire was used as instrument for data collection. The study employed a descriptive survey research design. The target population of this study were all undergraduate students from Ekiti State University Ekiti State, Nigeria and Federal University of Technology Akure Ondo State. The sample size of 380 undergraduate was used for the study out of 23,000 undergraduates of EKSU and 20,000 undergraduate of FUTA. The findings of this study revealed that Google meet 308(85.6%) and Zoom 306(85%) were the most used Virtual teaching-learning methods that were highly available for undergraduate use in their universities. The study also revealed that undergraduates in universities in South-west, Nigeria are facing challenges of virtual teaching-learning method usage. Also undergraduates in universities in South-west, Nigeria levels of lecture accessibility from virtual teaching-learning method are poor. It also revealed that benefiting from the few teaching-learning methods they use in their university. It was recommended that more virtual teaching-learning method should be adopted in the universities to teach undergraduates. The university management should increase the bandwidth of the internet service provider by budgeting sufficient fund for it.