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1.
Preprint in English | medRxiv | ID: ppmedrxiv-22269049

ABSTRACT

ObjectiveTo conduct a comprehensive systematic review and meta-analysis of all recommended SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) vaccines in people living with HIV (PLWH), as well as an overview of the safety, tolerability, and efficacy of the vaccines in PLWH. MethodsWe searched six databases, Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, Medline, Medrxiv, Global research on COVID-19 database, and Google Scholar for studies investigating the effects of SARS-CoV-2 vaccines on PLWH. Results of the association were summarised by SARS-CoV IgG seroconversion and level, vaccines efficacy and tolerability. A meta-analysis was performed for studies, using random-effects model and a pooled RR with 95% CI was reported. ResultsTwenty-three of the 1052 studies screened met the inclusion criteria. The review included 28, 246 participants among whom 79.55% (22,469/28, 246) were PLWH with median CD4 [≥] 200 cells/{micro}L. The pooled estimate of SARS-CoV-2 IgG seroconversion and positive neutralizing antibodies after the second vaccination dose between PLWH vs HIV negative were RR 0.95 (95%CI: 0.92 - 0.99, P = 0.006) and 0.88 (95%CI: 0.82- 0.95, P = 0.0007), respectively. The mean difference of IgG antibodies level (BAU/ml) was found higher in mRNA vaccines MD -1444.97 (95%CI: -1871.39, -1018.55). PLWH with CD4 less than 500 cells/ {micro}l had 15% risk reduction of neutralizing antibodies response compared to those with CD4 [≥] 500 cells/{micro}l (P = 0.003). The SARS-CoV-2 vaccine effectiveness was 65% (95%CI: 56%-72%, P <0.001) among vaccinated compared to unvaccinated PLWH. PLWH with CD4 count <350 cells/{micro}l had lower vaccine effectiveness compared to CD4 count [≥] 350 cells/{micro}l with 59% vs 72%, respectively. Vaccine tolerability was the same between PLWH and HIV negatives. ConclusionAccording to our findings, PLWH with CD4 [≥] 200 cells/{micro}L had lower immunogenicity and antigenicity in COVID-19 vaccines than HIV negatives. Additional doses of SARS-CoV- 2 vaccination are needful in PLWH.

2.
Preprint in English | medRxiv | ID: ppmedrxiv-22269065

ABSTRACT

BackgroundCoronavirus disease 2019 (COVID-19) is also associated with other co-morbidities among with previous and current pulmonary tuberculosis (PTB). PTB is a risk factor for COVID-19, both in terms of severity and mortality, regardless of human immunodeficiency virus (HIV) status. However, there is less information available on COVID-19 associated with PTB in point of view incidence and mortality rates in sub-Saharan Africa (SSA) as a high burden TB region. This systematic review served to provide data synthesis of available evidence on COVID-19/PTB incidence and case fatality rates, and mortality rate found in clinical and post-mortem COVID-19/PTB diagnostics in SSA. MethodsWe conducted a systematic electronic search in the PubMed, Medline, Google Scholar, Medrxix and COVID-19 Global literature on coronavirus disease databases for studies including COVID-19 associated with PTB in sub-Saharan Africa. The main outcomes were the proportion of people with COVID-19 associated to current /or previous PTB and the case fatality associated to COVID-19/PTB. The combination method was based on methodological similarities in the included random effect model studies using Prometa 3 software. We further undertook sensitivity analysis and meta-regression. ResultsFrom the 548 references extracted by the literature search, 25 studies were selected and included in the meta-analysis with a total of 191, 250 COVID-19 infected patients and 11, 452 COVID-19 deaths. The pooled COVID-19/PTB incidence was 2% [1%-3%] and mortality of 10% [4%-20%]. The pooled estimates for case fatality rate among COVID-19/PTB were 6% [3%-11%] for clinical PTB diagnostic and 26% [14%-48%] for post-mortem PTB diagnostic. Meta-regression model including the effect sizes and cumulative COVID-19 cases (P= 0.032), HIV prevalence (P= 0.041) and TB incidence (P= 0.002) to explained high heterogeneity between studies. ConclusionAs a summary, the incidence of TB associated with COVID-19 and case fatality rates are higher in SSA. However, COVID-19 associated to TB may be underreported in the studies conducted in SSA as the post-mortem TB diagnostic was higher. Large-scale cohort studies that adequately clear tool on previous and/or current TB diagnostic tools are required to confirmed COVID-19/TB incidence and case fatality in SSA. Review registrationPROSPERO (CRD42021233387)

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