TASK DEFINITION: In this task, you're given a paragraph and title from the research paper. Your task is to classify whether the given title is suitable or not for the research paper based on the given paragraph. Return "True" if title is proper according to paragraph else "False".
PROBLEM: Paragraph: Estimating the case-fatality risk (CFR)-the probability that a person dies from an infection given that they are a case-is a high priority in epidemiologic investigation of newly emerging infectious diseases and sometimes in new outbreaks of known infectious diseases. The data available to estimate the overall CFR are often gathered for other purposes (e.g., surveillance) in challenging circumstances. We describe two forms of bias that may affect the estimation of the overall CFR-preferential ascertainment of severe cases and bias from reporting delays-and review solutions that have been proposed and implemented in past epidemics. Also of interest is the estimation of the causal impact of specific interventions (e.g., hospitalization, or hospitalization at a particular hospital) on survival, which can be estimated as a relative CFR for two or more groups. When observational data are used for this purpose, three more sources of bias may arise: confounding, survivorship bias, and selection due to preferential inclusion in surveillance datasets of those who are hospitalized and/or die. We illustrate these biases and caution against causal interpretation of differential CFR among those receiving different interventions in observational datasets. Again, we discuss ways to reduce these biases, particularly by estimating outcomes in smaller but more systematically defined cohorts ascertained before the onset of symptoms, such as those identified by forward contact tracing. Finally, we discuss the circumstances in which these biases may affect non-causal interpretation of risk factors for death among cases. PLOS Neglected Tropical Diseases | 
 Title: Potential Biases in Estimating Absolute and Relative Case-Fatality Risks during Outbreaks

SOLUTION: False

PROBLEM: Paragraph: The genome of coronaviruses contains structural and non-structural genes, including several so-called accessory genes. All group 1b coronaviruses encode a single accessory protein between the spike and envelope genes, except for human coronavirus (HCoV) 229E. The prototype virus has a split gene, encoding the putative ORF4a and ORF4b proteins. To determine whether primary HCoV-229E isolates exhibit this unusual genome organization, we analyzed the ORF4a/b region of five current clinical isolates from The Netherlands and three early isolates collected at the Common Cold Unit (CCU) in Salisbury, UK. Results: All Dutch isolates were identical in the ORF4a/b region at amino acid level. All CCU isolates are only 98% identical to the Dutch isolates at the nucleotide level, but more closely related to the prototype HCoV-229E (>98%). Remarkably, our analyses revealed that the laboratory adapted, prototype HCoV-229E has a 2-nucleotide deletion in the ORF4a/b region, whereas all clinical isolates carry a single ORF, 660 nt in size, encoding a single protein of 219 amino acids, which is a homologue of the ORF3 proteins encoded by HCoV-NL63 and PEDV. Conclusion: Thus, the genome organization of the group 1b coronaviruses HCoV-NL63, PEDV and HCoV-229E is identical. It is possible that extensive culturing of the HCoV-229E laboratory strain resulted in truncation of ORF4. This may indicate that the protein is not essential in cell culture, but the highly conserved amino acid sequence of the ORF4 protein among clinical isolates suggests that the protein plays an important role in vivo. 
 Title: Virology Journal Human coronavirus 229E encodes a single ORF4 protein between the spike and the envelope genes

SOLUTION: False

PROBLEM: Paragraph: publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active. Abstracts accepted for publication only Pathogenesis R2249 Effect of a probiotic dairy product containing Lactobacillus casei Shirota on the gut microbiota in irritable bowel syndrome: a randomised, placebo-controlled, double-blind study Objectives: It has been hypothesized that disturbances in the intestinal flora could be a factor in the onset and persistence of IBS complaints. The aim of the study was to analyse the effect of Lactobacillus casei Shirota (LcS) on the faecal flora of IBS patients. Methods: In a randomised, placebo controlled, double blind study, IBS patients fulfilling the Rome criteria II were included. Patients took 2 bottles daily for 8 weeks, containing either LcS or placebo. Faecal samples were collected before intervention (week −2/0,S1), at the end of intervention (week 6/8,S2) and during follow-up (week 14/16,S3). Microbial populations (Bacteroides, anaerobes, bifidobacteria, coliforms, clostridia, and lactobacilli) were enumerated using quantitative plating. Total bacterial counts were performed using FISH. Bacterial DNA was analysed by quantitative Real-Time PCR for the detection of Atopobium spp., Bacteroides-Prevotella-Porphyromonas group, Clostridium coccoides-Eubacterium rectale group, Clostridium leptum subgroup, Clostridium difficile, Clostridium perfringens, Desulfovibrio desulfuricans group, and Bifidobacterium spp. Statistical analysis was performed using Mann-Whitney U tests or Paired Wilcoxon tests. P < 0.05 was considered statistically significant. Results: No significant differences in total bacterial counts were seen between the treatment and placebo group. Using quantitative plating, no significant differences were seen for the different bacterial groups between both groups. Significantly lower bacterial counts were seen in both groups for clostridia for S2 compared to S1 and S3. In the placebo group, significantly higher amounts of bifidobacteria and lactobacilli were detected for S2 compared to S1. Using qRT-PCR, significantly lower counts for D. desulfuricans group were seen in the placebo group compared to the treatment group. In the treatment group significant differences were seen only for S2 compared to S3, whereas in the placebo group, no significant differences were detected for the different bacterial groups at the different sampling points. Analysis at the IBS subtype level revealed differences in microbiota between the different subtypes. Conclusions: Although significant changes in the microbiota were seen during intake of LcS in the treatment group, differences in microbial populations between both groups were not significant. Interestingly, specific findings are likely to be associated with a specific IBS subtype rather than with IBS in general. Objective: To asses the chest radiography findings of patients with H1N1 Influenza virus infection. Review of radiological findings of 110 patients with confirmed influenza A virus infection admitted to two Hospitals in Cantabria, Spain. The radiological findings were characterized by pattern of opacities, lung distribution and, presence or absence of pleural effusions or hiliar or mediastinal adenopahies. The initial radiography was abnormal in 39 (34%) patients, but only 28 (25%) were related exclusively to the influenza A virus infection. Characteristic imaging findings in these 28 patients included: parenchymal consolidation 68%, consolidation plus ground glass 25% and ground glass opacities in 7%. Seventeen patients had a diffuse distribution of the opacities, in 61% it was bilateral, and lower and middle zones were those most frequently affected. No pleural effusions or pathological mediastinal lymph nodes were seen in this initial radiography. Patients with abnormal chest X-ray were more frequently men, smokers, had dyspnoea, pleuritic pain and diarrhoea. Conclusions: Although more of patients with influenza virus A infection showed normal chest X-ray, those with abnormal chest radiographies, characteristically showed areas of consolidation with or without ground glass affectation, bilateral and diffuse distribution, and predilection for lower and middle zones. Pleural effusion or mediastinal adenopahty were not findings seen in the initial radiography. 
 Title: R2250 H1N1 virus infection: review of chest radiographic findings

SOLUTION:
False