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COVID-19 pandemic is the big public health problem globally. The infection mainly manifests as acute respiratory illness. In hematology, the hemorrhagic presentation is an important possible clinical problem. 1 The low platelet count might be a cause of hemorrhagic disorder. Regarding thrombosis, there is limited data. A recent report showed the interrelationship among COVID-19, coagulopathy, and antiphospholipid antibodies. 2 Here, we would like to share additional data according to public official report of CDC (https://ddc.moph.go.th/viralpneumo nia/) of Thailand, the second country in the timeline of this novel coronavirus outbreak 3 on antiphospholipid syndrome in COVID-19 patients. From accumulated 2369 COVID-19 patients (April 8, 2020) with 30 deaths, 1 patient (0.04%) had antiphospholipid syndrome. This is the first report on coincidence between COVID-19 and antiphospholipid syndrome.

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Dear Editor, we would like to discuss on "Clinical and CT features in pediatric patients with COVID-19 infection: different points from adults. 1 " Xia et al 1 concluded that "procalcitonin elevation and consolidation with surrounding halo signs were common in pediatric patients which were different from adults. 1 " We would like to share observations from our country, Thailand, which is the second country that the disease has existed since January 2020. 2 In our country, there are already 48 patients with COVID-19. Two of these cases are pediatric patients (3-year-old female and 7-year-old male).Comparing to the total number of infected cases, the percentage of pediatric cases might be high. Of these cases, all have a fever and there is a history of closed contact to infected patients in the family within 3 days. These cases were hospitalized and had a complete recovery. Since the cases are early detected by screening of risk contact person to the known COVID-19 cases, the patients did not show any serious lung abnormality, no lung infiltration from chest computed tomography (CT). 3 Indeed, different clinical features and chest CT findings are observed in COVID-patients at different stages. The early diagnosis of pediatric COVID-19 in our setting might result in mild clinical presentation.

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