Introduction COVID-19, also known as Coronavirus disease, was detected in Wuhan, Hubei, China in December 2019. Since then, the virus has been designated a global pandemic, affecting all nations. Nigeria as a whole has recorded 255,937 cases of COVID-19. Studies on COVID-19 anxiety level, knowledge, and attitude have not been focused on youths after the lockdown. This research explored COVID-19-related knowledge, attitudes, and anxiety levels among Nigerian youths after the lifted pandemic lockdown. Methods after the COVID-19 pandemic lockdown, an online descriptive cross-sectional survey was performed among 818 young people aged 18 to 35 in South-Eastern Nigeria. The Statistical Package for Social Science (SPSS) version 25 technique was used to analyze the descriptive statistics. The Chi-square test, bivariate, and multivariate binary logistic regression were used to measure the associations. A p-value of 0.05 was statistically significant at a 95% confidence level. Results the majority of respondents 723 (88.39%) demonstrate a high degree of COVID-19 knowledge. Just a few respondents (0.49%) expressed a negative understanding of the virus. 556 (67.97%) had a positive attitude towards the virus. More than half of the respondents had a low anxiety level, 471 (57.58%) and 108 (13.20%) had a high level. Educational level, place of residence, and family income showed a statistically significant relationship with their anxiety levels (p = 0.001, 0.002, 0.01, respectively). Conclusion the infection, transmission, and symptoms of COVID-19 were well-understood by young people after the pandemic, who also displayed optimistic attitudes and low levels of fear. Higher levels of education, family income, and dwelling location were connected with COVID-19 knowledge and lower anxiety levels. This knowledge will assist health professionals in fighting current and future related outbreaks.

In the present digital era, the exploitation of medical technologies and massive generation of medical data using different imaging modalities, adequate storage, management, and transmission of biomedical images necessitate image compression techniques. Vector quantization (VQ) is an effective image compression approach, and the widely employed VQ technique is Linde–Buzo–Gray (LBG), which generates local optimum codebooks for image compression. The codebook construction is treated as an optimization issue solved with utilization of metaheuristic optimization techniques. In this view, this paper designs an effective biomedical image compression technique in the cloud computing (CC) environment using Harris Hawks Optimization (HHO)-based LBG techniques. The HHO-LBG algorithm achieves a smooth transition among exploration as well as exploitation. To investigate the better performance of the HHO-LBG technique, an extensive set of simulations was carried out on benchmark biomedical images. The proposed HHO-LBG technique has accomplished promising results in terms of compression performance and reconstructed image quality.

Introduction.Young adults are more susceptible to HIV infection due to a lack of reliable and timely information about HIV/AIDS prevention and transmission. This study examined the KAPS of college students in Pampanga, Philippines due to high cases of HIV in the region. KAPs is vital in developing effective strategies for HIV intervention.Objective. The study evaluated the knowledge, attitudes, and practices on prevention and transmission HIV/AIDS among college students in Pampanga, Philippines.Method. This cross-sectional, descriptive study used a self-administered questionnaire to assess HIV/AIDS knowledge, attitudes, and practices among 565 college students aged 18-24 from three Pampanga higher educational institutions Philippines. A questionnaire was used to gather data on KAPs regarding HIV/AIDS transmission and prevention. The data were analyzed using SPSS version 20.0.Results. Among 565 participants, 239 persons (42%) showed low knowledge of transmission and prevention of HIV/ AIDS, 203 (36%) had moderate level of knowledge, and 121 (21%) had high level. Common misconceptions about HIV transmission included washing genitals could prevent transmission and that transmission was possible through mosquito bites, respiratory fluids, sweat, or urine. Television was the most frequent source of HIV/AIDS-related knowledge among respondents. More than half (63.1%) of those surveyed had a good attitude toward HIV-positive people. Those who answered questions related to the sexual practices said that their last three encounters were with the same person (18.1%). Those who used piercing objects claimed to sterilize them before utilizing them on their bodies (18.6 %). And many participants refused to question related to practices. Conclusion.Participants had a low knowledge of HIV/AIDS, which explains why there were many misconceptions about HIV/AIDS transmission and prevention. More than half of the respondents had a good attitude toward HIVpositive people. Those who answered the practice-related questions engaged in risky behaviour. Providers should implement an intervention program to increase HIV/AIDS knowledge, attitudes, and behaviors in the region.

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