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This study details vocal quality, articulation errors, and hearing disorders in 80 children and young adults with diagnosed allergies. Results indicated that almost 50% had abnormalities in vocal quality and/or articulation and 13% had reduced auditory acuity. Vocal quality disorders showed a significant relationship to bronchial asthma in association with other allergic reactions. All subjects with diminished hearing had allergic rhinitis either singly or in combination with another disorder. Findings suggest that bronchial asthma and allergic rhinitis are related to the development of vocal quality disorders and that allergic rhinitis is associated with misarticulations and diminished hearing. The presence of speech sound omissions in allergic rhinitis patients above age 8 may predict the presence or previous history of fluctuating hearing loss.

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PurposeThis paper aims to study the interlinkages between cryptocurrency and the stock market by characterizing their connectedness and the effects of the COVID-19 crisis on their relations.Design/methodology/approachThe author employs a quantile vector autoregression (QVAR) to identify the connectedness of nine indicators from January 1, 2018, to December 31, 2021, in an effort to examine the relationships between cryptocurrency and stock markets.FindingsThe results demonstrate that the pandemic shocks appear to have influences on the system-wide dynamic connectedness. Dynamic net total directional connectedness implies that Bitcoin (BTC) is a net short-duration shock transmitter during the sample. BTC is a long-duration net receiver of shocks during the 2018–2020 period and turns into a long-duration net transmitter of shocks in late 2021. Ethereum is a net shock transmitter in both durations. Binance turns into a net short-duration shock transmitter during the COVID-19 outbreak before receiving net shocks in 2021. The stock market in different areas plays various roles in the short run and long run. During the COVID-19 pandemic shock, pairwise connectedness reveals that cryptocurrencies can explain the volatility of the stock markets with the most severe impact at the beginning of 2020.Practical implicationsInsightful knowledge about key antecedents of contagion among these markets also help policymakers design adequate policies to reduce these markets' vulnerabilities and minimize the spread of risk or uncertainty across these markets.Originality/valueThe author is the first to investigate the interlinkages between the cryptocurrency and the stock market and assess the influences of uncertain events like the COVID-19 health crisis on the dynamic interlinkages between these two markets.

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