First and Second Waves of Covid-19: A Comparative Study of the Clinical Presentation and Outcome among Hospitalized Patients in Lagos Nigeria.

Objective: Nigeria experienced many waves of the COVID-19 pandemic. This study compared the clinical presentations and mortality among hospitalized patients during the first and second waves of the pandemic in Lagos State, Nigeria.

Methods: A retrospective cohort study was conducted.

COVID-19 mortality rate and its associated factors during the first and second waves in Nigeria.

COVID-19 mortality rate has not been formally assessed in Nigeria. Thus, we aimed to address this gap and identify associated mortality risk factors during the first and second waves in Nigeria. This was a retrospective analysis of national surveillance data from all 37 States in Nigeria between February 27, 2020, and April 3, 2021.

Length of Hospital Stay of COVID-19 Patients managed at the Lagos State Isolation Centres during the First Wave of the Pandemic.

Background: Lagos State has the highest number of COVID-19 cases in Nigeria. We assessed the factors predicting the length of hospital stay of COVID-19 patients admitted in 15 isolation centres across the state.

Methods: We reviewed the electronic medical records of all COVID-19 patients admitted and discharged between February 27, 2020, and September 30, 2020.

Assessing the capacity of symptom scores to predict COVID-19 positivity in Nigeria: a national derivation and validation cohort study.

Objectives: This study aimed to develop and validate a symptom prediction tool for COVID-19 test positivity in Nigeria.

Design: Predictive modelling study.

Setting: All Nigeria States and the Federal Capital Territory.