Delta Variant Doubles Covid-19 Hospitalization Risk, Study Finds https://t.co/nLA7UXKHy5
North-East Region
[{'url': 'https://t.co/nLA7UXKHy5', 'expanded_url': 'http://dlvr.it/S6T16g', 'display_url': 'dlvr.it/S6T16g', 'indices': [65, 88]}]
SERANGOON GARDEN
['delta', 'variant', 'double', 'covid', '19', 'hospitalization', 'risk', 'study', 'find', 'https://t.co/nla7uxkhy5']
['study', 'risk', 'risk', 'risk']
delta variant covid hospitalization risk study
delta variant doubles covid19 hospitalization risk study finds
  [
    {"relatedness": False, "type": "none", "explanation": "This post is not related to maintenance report feedback for public flat house."},
    ]

The provided Twitter post does not relate to a maintenance report feedback for public flat house. The post is about a study finding that the delta variant of COVID-19 doubles the risk of hospitalization, which is a completely different topic. Therefore, the post does not match any of the categories in the question.