SARS-CoV2 mutations and impact on mortality: observational study in a sub-saharan Africa hospital.

BACKGROUND: One year after the coronavirus disease 2019 (COVID-19) pandemic, the focus of attention has shifted to the emergence and spread of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) variants of concern (VOCs). The aim of the study was to assess the frequency of VOCs in patients followed for COVID-19 at Kinshasa university hospital (KUH) during the 3rd and 4th waves of the pandemic in Kinshasa. Hospital mortality was compared to that of the first two waves. METHOD: The present study included all patients in whom the diagnosis of SARS-CoV-2 infection was confirmed by the polymerase chain reaction (PCR). The laboratory team sequenced a subset of all SARS-CoV-2 positive samples with high viral loads define as Ct < 25 to ensure the chances to generate complete genome sequence. RNA extraction was performed using the Viral RNA Mini Kit (Qiagen). Depending on the platform, we used the iVar bioinformatics or artic environments to generate consensus genomes from the raw sequencing output in FASTQ format. RESULTS: During the study period, the original strain of the virus was no longer circulating. The Delta VOC was predominant from June (92%) until November 2021 (3rd wave). The Omicron VOC, which appeared in December 2021, became largely predominant one month later (96%) corresponding the 4th wave. In-hospital mortality associated with COVID-19 fell during the 2nd wave (7% vs. 21% 1st wave), had risen during the 3rd (16%) wave before falling again during the 4th wave (7%) (p < 0.001). CONCLUSION: The Delta (during the 3rd wave) and Omicron VOCs (during the 4th wave) were very predominant among patients followed for Covid-19 in our hospital. Contrary to data in the general population, hospital mortality associated with severe and critical forms of COVID-19 had increased during the 3rd wave of the pandemic in Kinshasa.

Impact of adapted physical activity on blood pressure and hypertension control in the militaries of Kinshasa Garrison, Democratic Republic of Congo: A randomized controlled trial

Context and objective. Major handicap for operational conditioning of troops, hypertension requires innovative approaches for its prevention and management. The present study aimed to evaluate the impact of adapted physical activity (APA) on BP level of sedentary soldiers from Kinshasa garrison and the rate of hypertension control in those with high BP. Methods. Open, parallel randomized controlled trial carried out at Camp Lt-Colonel Kokolo (CVEC) from June 2016 to October 2017) in sedentary soldiers (57.6 %, hypertensives) allocated for 8 weeks to APA (n=119) or control (n=110). The randomization procedure used permuted blocks of four consecutive participants. The outcomes were baseline-adjusted betweengroup difference in BP level (all participants), in rate of BP control among hypertensives. Results. At the last available visit in 226 participants (119 vs 107), the baseline-adjusted BP difference between active and control group by intentionto-treat was 5.1 (95 % CI 1.2 -10.8)/3.0 (0.1-6.9) mmHg lower in the active group. The effect of APA was also significant across pre-specified categories of participants based on age, officers' rank, and hypertension status. Among 129 analyzed drug treated hypertensives (68 vs 61), the rate of BP control remained unchanged in the control group (43.8 to 44.3%) but increased (43.5% to 85.3 %) in the active group yielding a baseline-adjusted between group difference of 40.7 (32.2; 49.2) %. The probability to achieve hypertension control was greater (HR: 3.38 [95% CI: 1.48- 4.84] in the active group. PP analysis of 122 soldiers (80 vs 42) with data at all scheduled visits yielded confirmatory results for BP reduction and for hypertension control by APA. The changes in BP were positively correlated with concomitant reductions in heart rate. Conclusion. Exercise training induced a significant BP reduction in sedentary militaries and improved the control rate among those with drug treated hypertension

The Impact of hs-CRP on Cardiovascular Risk Stratification in Pilots and Air Traffic Controllers.

INTRODUCTION: We assessed determinants of serum hs-CRP level in pilots and air traffic controllers (ATCs) and its impact on their atherosclerotic cardiovascular disease (ASCVD) risk.METHODS: We obtained serum hs-CRP measurements, evaluated traditional cardiovascular risk factors and assessed global ASCVD risk based on 2018 ESH/ESC guidelines. Elevated hs-CRP was hs-CRP values > 3 mg L1. Determinants of elevated hs-CRP were assessed using stepwise logistic regression analysis. We used the net reclassification method to evaluate the impact of hs-CRP levels on global ASCVD risk.RESULTS: Of the 335 subjects (mean age 45.4 11.6 yr, 70% pilots, 99% men, 37% Caucasians), 127 individuals (39.5%) presented with elevated hs-CRP levels. Compared to those with normal hs-CRP, individuals with elevated hs-CRP were older with faster heart rate and higher blood pressure, BMI, and P wave amplitude. The proportion of individuals with elevated hs-CRP was greater among those with smoking habits, physical inactivity, MetS, tachycardia, altered P wave axis, LVH, and HT-TOD. Aging (aOR 2.15 [1.676.98]), hypertension (aOR 3.88 [2.296.58]), type 2 diabetes (aOR 6.71 [1.7710.49]), tachycardia (aOR 2.03 [1.914.53]), and LVH (aOR 2.13 [1.647.11]) were the main factors associated with elevated hs-CRP levels. Low, moderate, high, and very high risk were observed in 24 (15%), 68 (41%), 62 (37%), and 12 (7%) subjects, respectively. Including hs-CRP resulted in the net reclassification of 25% of subjects, mostly from moderate to high risk.CONCLUSION: The integration of hs-CRP improved the estimation of global ASCVD risk stratification. However, a survey with a comprehensive population assessing the cost/benefit impact of such a referral is needed.Buila NB, Ntambwe ML, Mupepe DM, Lubenga YN, Bantu J-MB, Mvunzi TS, Kabanda GK, Lepira FB, Kayembe PK, Ditu SM, MBuyamba-Kabangu J-R. The impact of hs-CRP on cardiovascular risk stratification in pilots and air traffic controllers. Aerosp Med Hum Perform. 2020; 91(11):886891.

Analysis of blood pressure and selected cardiovascular risk factors in the Democratic Republic of the Congo: the May Measurement Month 2018 results.

Hypertension (HT) is the largest contributor to cardiovascular disease mortality and is characterized by high prevalence and low awareness, treatment, and control rates in sub-Saharan Africa. May Measurement Month (MMM) is an international campaign intended to increase awareness of high blood pressure (BP) among the population and advocate for its importance to the health authorities. This study aimed to increase awareness of raised BP in a country where its nationwide prevalence is yet unestablished. Investigators trained and tested how to use the campaign materials, collected participants' demographic data, lifestyle habits, and obtained from each one three BP measurements. Hypertension was defined as a BP ≥140/90 mmHg, or use of antihypertensive medication. Of the 18 719 screened (mean age 41 years; 61.4% men), 26.1% were found to be hypertensive of whom 46.3% were aware of their condition and 29.6% were taking antihypertensive medication. The control rate of HT was 43.0% in those on medication and 12.7% among all hypertensive respondents. Comorbidities found were-diabetes (3.3%), overweight/obesity (35.5%); and a previous stroke and a previous myocardial infarction were reported by 1.2% and 2.0%, respectively. Imputed age- and sex-standardized BP was higher in treated hypertensive individuals (135/85 mmHg) than those not treated (124/78 mmHg). Based on linear regression models adjusted for age and sex (and an interaction) and antihypertensive medication, stroke survivors, those who drank once or more per week (vs. never/rarely), and overweight/obese participants were associated with higher BP. MMM18 results in the Democratic Republic of the Congo corroborated the high prevalence of HT in Kinshasa screenees with low rates of treatment and control. Extension of the MMM campaign to other parts of the country is advisable.

Alcohol use and sexual risk behaviors in the Armed Forces of the Democratic Republic of the Congo.

BACKGROUND: Alcohol misuse is an important contributor to sexual acquisition and transmission of HIV in military communities. This cross-sectional study quantified the prevalence of probable problematic alcohol use among male service members in the Armed Forces of the Democratic Republic of the Congo (FARDC), identified associated factors, and investigated associations of alcohol misuse with risky sexual behaviors. METHODS: Participants included 2549 active duty male soldiers ≥ 18 years old. Data were collected via computer-assisted personal-interview from October 2013-April 2014. The Alcohol Use Disorders Identification Test (AUDIT) was used to identify probable problematic alcohol use (AUDIT score ≥ 8) compared to no/low-risk alcohol use (AUDIT score ≤ 7). Bivariate logistic regressions were used to identify factors associated with probable problematic alcohol use. Several multivariable logistic regressions (adjusted for age, marital status, education level) were used to examine associations of probable problematic alcohol use with risky sexual behaviors. Tests were two sided; statistical significance was defined as p < 0.05. RESULTS: Fifteen percent of men screened positive for probable problematic alcohol use. The odds of probable problematic alcohol use were elevated among men who were single and living with a partner (OR = 1.66; 95% CI = 1.24-2.21), ranked as a non-commissioned officer [NCO] (OR = 1.40; 95% CI = 1.10-1.77), and in the 30-39 and 40-49 age groups (OR 30-39 age group = 2.17; 95% CI = 1.56-3.02; OR 40-49 age group = 1.79; 95% CI = 1.26-2.55). Probable problematic alcohol use was associated with increased odds of having sex with a sex worker (SW), having multiple sexual partners, and participating in transactional sex (aOR sex with a SW = 2.36; 95% CI = 1.78-3.13; aOR multiple sexual partners = 2.08; 95% CI = 1.66-2.60; aOR transactional sex = 1.99; 95% CI = 1.59-2.50). CONCLUSIONS: Results emphasize the need to address alcohol use in the FARDC and integrate alcohol abuse education into HIV prevention programs among male service members. Alcohol abuse prevention efforts should target men who are 30-49 years of age, unmarried, and ranked as a NCO. Messages and interventions to reduce alcohol misuse in relation to risky sexual behaviors are needed.