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. Deidentified medical records of laboratory-confirmed COVID-19 patients admitted into 15 isolation centers in Lagos, Nigeria between February 27, 2020, and September 30, 2020 (first wave) and October 1, 2020, and April 30, 2021 (second wave) were reviewed. IBM Statistics version 25 was used for data analysis.

RESULTS

More patients were hospitalized during the first wave of the pandemic. The mean age of patients was higher during the second wave (54.5±15.8 years vs. 42.2±15.5 years, p <0.001). More patients admitted during the second wave had comorbidities (56.0% vs 28.6%, p <0.001), were symptomatic (90.8% vs 52.0%, p <0.001), had severe COVID-19 disease (58.9% vs 25%, p <0.001) and died (14.9% vs 6.4%, p<0.001) compared with the first wave. The odds of death increased with age and severity of COVID-19 disease during the first and second waves.

CONCLUSION

A higher proportion of the patients admitted in Lagos, Nigeria during the second wave were older, had comorbidities, and had severe COVID-19 disease than the first wave. Despite the fewer hospitalized patients, there were more deaths during the second wave.

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. Logistic and linear regressions were used to assess factors predicting the length of hospital stay.

RESULTS

A total of 3153 records were reviewed, of which 2623 (83.2%) met the inclusion criteria. The mean age of patients admitted was 40.5 (Sd 14.8) years. The age range was four days-97 years. A total of 1258 (48.0%) were symptomatic, while 2056 (78.4%) and 567 (21.6%) presented with mild and severe disease, respectively. Cough (22.0%), fever (17.3%) and breathlessness (12.3%) were the most common symptoms at presentation. Generally, the median length of hospital stay was 11 (IQR 9, 14) days. A total of 1609 (61.3%) had a prolonged length of hospital stay. The odds for prolonged hospital stay was higher among elderly patients (AOR 12.1 95%CI 7.6-19.4, p<0.001), male (AOR 1.2 95%CI 1.0-1.4, p=0.031) and patients with severe disease (AOR 1.3 95% CI 1.0-1.7, p=0.042). Age, hypertension and shortness of breath made the most significant contribution to predicting the length of hospital stay (P<0.05).

CONCLUSION

Age, gender, hypertension and breathlessness predicted the length of hospital stay. Proactive measures should be instituted in managing COVID-19 patients.

Full autopsy in a confirmed COVID-19 patient in Lagos, Nigeria - A case report

Objectives

To report the postmortem findings of a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) positive individual who died in Lagos (Nigeria) in June 2020 and to investigate the cause, pathogenesis as well as pathological changes noticed during the examination.

Methods

Complete postmortem examination was performed according to standard procedures in a regular autopsy suite using personal protective equipment including N95 masks, goggles and disposable gowns. The diagnosis of coronavirus disease 2019 (COVID-19) was confirmed by real-time reverse transcription polymerase chain reaction (RT-PCR) testing on postmortem nasopharyngeal swabs.

Results

A 47-year-old man with a medical history of well controlled hypertension and dyslipidaemia died after long hours of transportation for medical care in a hospital in Lagos. He tested positive for SARS-CoV-2 on ante- and postmortem nasopharyngeal swabs. Autopsy revealed pneumonia with diffuse alveolar damage, disseminated intravascular coagulopathy and hypovolaemic shock.

Conclusions

Autopsy can be performed on decedents who died from or with SARS-CoV-2 infection in a low resource environment such as ours. A standard autopsy room was used while deploying recommended infection prevention control and regular decontamination. The clinical details, autopsy findings such as diffuse alveolar damage and airway inflammation were consistent with a COVID-19 related pathology. While the decedent had ‘controlled’ co-morbidity, he succumbed to multi-organ failure occasioned by shock and disseminated intravascular coagulopathy.

A prospective randomized comparative study of targeted versus empirical prophylactic antibiotics in the prevention of infective complications following transrectal ultrasound-guided prostate biopsy

Background:

It is established that antibiotic prophylaxis prevents infection following transrectal ultrasound-guided prostate biopsy. This study compares the infective complications in transrectal prostate biopsy (TRPB) in empirical versus targeted prophylactic antibiotics.

Patients and Methods:

Urine and rectal swabs were obtained prior to TRPB. They were randomized into targeted antibiotic (TA) and empirical antibiotic (EA) groups. TA had prophylactic antibiotics according to rectal swab culture, whereas EA had the standard parenteral ciprofloxacin. They were followed up weekly for 4 weeks. Chi-square or Fisher's exact tests were used to compare categorical variables, Student's “t”-test was used to compare means of numerical variables, and P < 0.05 was considered statistically significant.

Results:

One hundred patients were studied, fifty in each group. The mean age was 66 years, with men aged 60–69 years accounting for 50% of the study population. Providencia stuartii, Escherichia coli, andCitrobacter freundii were the most predominant bacteria identified in the prebiopsy rectal swab culture, with resistance to ciprofloxacin (57%) being much more common than that to levofloxacin (21%). Postbiopsy infection occurred in one (2%) patient in the TA group and five (10%) patients in the EA group. Difference in the infection rate between the two groups was statistically significant (P = 0.042). Three of the patients with postbiopsy infection in the EA group had urosepsis and required hospitalization. Fluoroquinolone-resistant bacteria were responsible for infection in all the six patients. TA reduced the risk of postbiopsy infection by 5.6 folds.

Conclusion:

TA was associated with a decreased risk of infection in TRPB.

Typhoid Fever: Tracking the Trend in Nigeria

Typhoid fever continues to pose a serious health challenge in developing countries. A reliable database on positive blood cultures is essential for prompt interventions. To generate reliable data on Salmonella enterica serovar Typhi (S. Typhi)–positive blood culture trends in typhoidal Salmonella in Nigeria alongside changing contextual factors and antimicrobial resistance patterns, a retrospective cohort study was conducted in two hospitals in Lagos between 1993 and 2015. Medical records of typhoid patients were reviewed for positive culture and antibiogram, using standard procedures and analyzed. Additional data were retrieved from a previous study in seven facilities in Abuja and three hospitals in Kano from 2008 to 2017 and 2013 to 2017, respectively. A declining trend in percent positivity of S. Typhi was observed in Abuja with more erratic trends in Lagos and Kano. In Lagos, more than 80% of the isolates from the entire study period exhibited multiple drug resistance with a generally increasing trend. Of the chosen contextual factors, improvements were recorded in female literacy, access to improved water supply, diarrheal mortality in children younger than 5 years, gross domestic product, and poverty while access to improved sanitation facilities decreased over time nationally. Typhoid fever still poses a serious health challenge in Nigeria and in antibiotic resistance, and is a major health security issue. A combined approach that includes the use of typhoid vaccines, improvements in sanitation, and safe water supply is essential.