Reinfections with SARS-CoV-2 have been verified by the presence of phylogenetically distant viruses in each episode. Here, we report a suspected case of SARS-CoV-2 persistence with reactivation in a 35-years old patient presenting positive RT-PCR on April 7th and August 7th, each episode characterized by mild and severe symptoms, respectively. Sequencing of viral genomes identified only two SNPs indicating the presence of genetically linked viruses for the first time. Subsequently to hospital discharge, the patient presented a positive diagnosis for SARS-CoV-2 in stool, urine and semen samples.
Here, we report two sequences of the new SARS-CoV-2 variant recently detected and designed as B.1.526. This variant carries the immune escape-associated mutation E484K and additional mutations in the S, N, NSP2, NSP3, NSP4, NSP6, NSP8, NSP12 and NSP13 genes. Viral sequences were obtained from an individual traveling from the US to Equator with a negative RT-PCR and from one of his closest contacts that became infected. These cases should be considered an alert for the potential circulation of a new variant of concern with the E484K mutation in South America
Mangroves forests are located in tropical and subtropical regions, its adaptation and distribution in coastal regions is influenced by temperature, humidity, tidal and saline fluctuations. Therefore, there are exposed to multiple environmental fluctuations. Mangroves are inhabited by wildlife but also is supported by a diverse community of microorganisms, including fungi. Several fungi in mangroves have multiple ecological roles as saprotrophs or as an opportunistic pathogen, many of them are also used in the industry, as the genus Aspergillus, that are important in the biomedicine, industrial and environmental applications. In this study we isolated species of fungi from mangrove stems and propagules. They were identified by both morphological and by its molecular characteristics. Here, we report the first isolated of Aspergillus niger and Aspergillus aculeatus from mangrove in Ecuador. Research such as these highlights the importance to determine the role of fungi in mangrove ecosystem.
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