Coronavirus Disease 2019 (Covid-19) telah menjadi bencana katasropik dalam berbagai bidang, terutama bidang kesehatan. Mengingat mortalitas yang tinggi dan penyebaran yang cepat dari penyakit ini, vaksin menjadi salah satu harapan terbesar untuk dapat mengendalikan pandemi ini. Immunization stress-related response (ISRR) merupakan salah satu Kejadian Ikutan Pasca imunisasi (KIPI) yang bermanifestasi sebagai respons stres akut, reaksi vasovagal, atau reaksi gejala neurologis disosiatif (dissociative neurological symptom reactions atau DNSR) yang dapat muncul tepat sebelum, selama, atau segera setelah imunisasi. Fenomena kluster ISSR seringkali disebut juga dengan penyakit psikogenik massal. Adanya stigma negatif terhadap efektifitas dan keamanan vaksin Covid-19 dapat membuka peluang terjadinya kluster ISRR yang dapat membuat masyarakat semakin sungkan untuk menerima imunisasi sehingga menyebabkan gagalnya program imunisasi. Langkah preventif dapat meminimalkan risiko ISRR, dan jika ISRR terjadi, maka identifikasi yang cepat, diagnosis, dan manajemen yang tepat dapat mengurangi dampaknya. Kata kunci:Immunization stress-related response, kejadian ikutan pasca imunisasi, vaksin Covid-19.

Anemia is a condition in which hemoglobin (Hb) concentration being lower than a specific threshold. The prevalence of anemia among adolescents is varies among country and its proportion is higher in developing countries. In Indonesia, the proportion of anemia in the 15-24-year age group was 32%. Anemia in adolescents has a negative impact on decreased immunity, impaired physical growth and mental development, concentration, learning achievement, adolescent fitness and productivity. Knowledge of the extent and causes of anemia in adolescence is very important because it is a window of opportunity for interventions to improve adolescent health. This study aims to describe level of Hb and knowledge regarding anemia and its prevention among adolescents. This research is a descriptive study with a cross sectional method using Hb meter to assess Hb level and questionnaire to assess knowledge regarding anemia and its prevention among adolescents, conducted in November 2019. The respondents were 42 adolescents in SMPN 9 Palembang. The ages of respondents in this study ranged from 12-13 years, consisting of 36% boys and 64% girls. The mean value of Hb level in all adolescent was 13.78 g/dL with 12% of respondents had anemia. A total of 76% adolescents had poor knowledge, while 24% adolescents had good knowledge. The mean value of Hb level in all adolescent was normal, only few adolescents had anemia. This study also shows majority of the adolescents have poor knowledge about anemia and its prevention.

Urea or Blood Urea Nitrogen (BUN) is a non-protein blood nitrogen molecule that results from the catabolism of protein and amino acids through the urea cycle and is eliminated by the kidneys as urine, perspiration, and degraded by intestinal bacteria. BUN levels can indicate renal disease. Cinnamon (Cinnamomum burmanii) is an Indonesian herb that functions as an anti-inflammatory and antioxidant, reducing urea levels and contributing to improved kidney function. The search was conducted using Google Scholar, Pubmed, and Science Direct. "cinnamomum burmannii", "cinnamon", "cinnamon extract", "blood urea nitrogen", "serum urea", "urea", "ureum", and "kidney" were used as keywords. Cinnamon, which contains cinnamaldehyde, coumarins, tannins, flavonoids, polyphenols, glycosides, terpenoids, and anthraquinone compounds, might protect the kidneys by reducing urea levels through the decrease of oxidative stress

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