Version 1: A review of dengue and dengue haemorrhagic fever amidst the COVID-19 pandemic in Thailand: A raising concern and public health nested crises

Dengue and dengue haemorrhagic fever, caused by the dengue virus (DENV) belonging to the Flaviviridae family, has become a significant public health concern that has led to more than 1,000,000 cases and 1076 deaths in Thailand between 2009 and 2021. The patients infected with the dengue virus can be represented with severe headaches, eye pain, muscle and joint pains, nausea, vomiting, diarrhoea, swollen glands, and rash. Coexisting with the COVID-19 pandemic affects humans in morbidity and mortality in Thai individuals, including effects on the healthcare system. COVID-19 and Its impacts confirmed that cases of dengue fever in 2021 in Thailand had been reported to decrease irregularly compared with the previous year; however, trends have increased in dengue cases since early 2022. Therefore, to overcome current burdens and challenges caused by dengue and dengue haemorrhagic fever amidst COVID-19 in Thailand, exposing various perspectives on the dengue situation, recommendations for dengue fever control, and approaches to promote accurate understanding.