Widespread Household Transmission of SARS-CoV-2 B.1.1.529 (Omicron) Variant from Children, South Korea, 2022

The role that children play in the transmission of the omicron variant is unclear. Here we report an outbreak that started in young children attending various pediatric facilities, leading to extensive household transmission that affected 75 families with 88 confirmed case-patients in 3 weeks. Tailored social and public health measures directed towards children and pediatric facilities are warranted with the emergence of highly transmissible omicron variant to mitigate the impact of coronavirus diseases 2019 (COVID-19).

Contribution to the Checklist of Soil-inhabiting Fungi in Korea

A total of 82 genera and 271 species of soil-inhabiting fungi including saprobic, nematode-trapping, and arbuscular mycorrhizal but plant pathogenic fungi published hitherto in South Korea are listed with the information on geographic location, habitat, vegetation when available, and relevant literatures.

A Note on Nitschkia confertula

A fungus that grew over bed-logs of shiitake (Lentinula edodes) and caused damage was isolated from mushroom-growing farms. The fungus produced extensive mat-like dark subiculum with ascomata in it and was identified as Nitschkia confertula. This is the first report in Korea and morphological characteristics are fully described.

Descriptive Reports on Some Soil-Inhabiting Fungi in Korea

During the study of microbial structures in root-regions of tomato and red pepper from fields, various soil-inhabiting fungi were isolated with the dilution plate technique. Among them an ascomycete, Emericellopsis mirabilis and three hyphomycetes, Gliocladium solani, Humicola veronae and Verticillium chlamydosporium are presented for the first time in Korea along with Talaromyces trachyspermus, Chaetomium globosum and Doratomyces microsporus.

A Polyphialidic Hyphomycete Gonytrichum macrocladum New to Korea from the Arable Soil in Jinju-shi

During the study of soil mycoflora in Jinju-shi in 1997, a dematiaceous hyphomycete, Gonytrichum macrocladum , was isolated using the soil dilute plating method. The isolate was recovered with very low frequencies and recorded for the first time in Korea. illustrated descriptions are presented for the isolate examined in the present study.

A Mycoparasitic Ascomycete Syspastospora parasitica on the Entomopathogenic Fungus Paecilomyces tenuipes Growing in Bombyx mori

While studying Bombyx mori "Zipnuae" inoculated with an entomopathogenic fungus, Paecilomyces tenuipes, a mycoparasitic hymenoascomycete with a long neck was isolated from the silkworm rearing room. The fungus was identified as Syspastospora parasitica which has been recognized as a hyperparasite on various moniliaceous hyphomycetes. A descriptive illustration is presented in this study.