id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-351770-cirq6pfx	Chen, Wei	SARS-CoV-2 neutralizing antibody levels are correlated with severity of COVID-19 pneumonia	2020-08-13		.txt	text/plain	3771	226	54	In this study, we analyzed the SARS-CoV-2 NAb titers in patients recently recovered from COVID-19 using a novel SARS-CoV-2 surrogate virus neutralization test (sVNT) [12] . The distribution of NAb titers in patients with COVID-19 were then plotted based on the variables of age, sex, symptom, laboratory parameters and chest CT findings at the time of admission, treatment during hospitalization and the time of blood collection for antibody analysis (Figure 1 ). Independent variables included in the OLS model included age, sex, CT score, comorbidity, laboratory parameters that associated with disease severity (CRP level and lymphocyte counts), treatment that may influence immune response to pathogen (corticosteroids and intravenous immunoglobulin) and time of blood collection for NAb analysis. In multivariate analyses, after adjustment for age, sex, comorbidity, corticosteroid treatment, CRP level, lymphocyte count and time of NAb analysis, baseline chest CT scores still strongly correlated with NAb titers in patients recovered from COVID-19 (Table 2 , p=0.02).	./cache/cord-351770-cirq6pfx.txt	./txt/cord-351770-cirq6pfx.txt