Prevalencia de embarazos con infección por virus Zika en una Unidad de Primer Nivel de Atención en Coatzacoalcos Veracruz México del Instituto Mexicano del Seguro Social / PREVALENCE OF PREGNANCIES WITH ZIKA VIRUS INFECTION IN A FIRST LEVEL CARE UNIT IN COATZACOALCOS VERACRUZ MEXICO OF THE MEXICAN INSTITUTE OF SOCIAL SECURITY

El virus Zika, es un arbovirus del género flavivirus (familia Flaviviridae), muy cercano filogenéticamente al del dengue, fiebre amarilla, la encefalitis japonesa, o el virus del Nilo Occidental. El presente estudio exploratorio busca identificar los casos confirmados y sugestivos de infección por virus Zika en mujeres embarazadas en la Unidad de Medicina Familiar N° 60 del IMSS de Coatzacoalcos, Veracruz. México como primera aproximación epidemiológica en esta región.

The Zika virus is an arbovirus of the genus flavivirus (family Flaviviridae), very closely phylogenetically a virus such as dengue fever, yellow fever, Japanese encephalitis, or West Nile virus. According to the Epidemiological Surveillance System for Zíka Virus Disease, until November 4th, 2016, in Mexico there were 6,094 confirmed cases of infection and 3,167 suspected cases of Zika virus infection in pregnant women in 24 states of the Mexican Republic, with a higher prevalence in Veracruz, Chiapas, Colima, Campeche, Yucatan and Quintana Roo. This is an original study that focuses on identifying the confirmed and suggestive cases of Zika virus infection in pregnant women in the Family Medicine Unit No. 60 of the IMSS in Coatzacoalcos, Veracruz. Mexico; It is an exploratory study in the registry of cases of pregnant women with Zika virus infection in the Family Medicine Unit No. 60 of Coatzacoalcos, Veracruz, Mexico as epidemiological basis

A Synoptic Assessment of the Amazon River-Ocean Continuum during Boreal Autumn: From Physics to Plankton Communities and Carbon Flux.

The Amazon generates the world's largest offshore river plume, which covers extensive areas of the tropical Atlantic. The data and samples in this study were obtained during the oceanographic cruise Camadas Finas III in October 2012 along the Amazon River-Ocean Continuum (AROC). The cruise occurred during boreal autumn, when the river plume reaches its maximum eastward extent. In this study, we examine the links between physics, biogeochemistry and plankton community structure along the AROC. Hydrographic results showed very different conditions, ranging from shallow well-mixed coastal waters to offshore areas, where low salinity Amazonian waters mix with open ocean waters. Nutrients, mainly [Formula: see text] and [Formula: see text], were highly depleted in coastal regions, and the magnitude of primary production was greater than that of respiration (negative apparent oxygen utilization). In terms of phytoplankton groups, diatoms dominated the region from the river mouth to the edge of the area affected by the North Brazil Current (NBC) retroflection (with chlorophyll a concentrations ranging from 0.02 to 0.94 mg m-3). The North Equatorial Counter Current (NECC) region, east of retroflection, is fully oligotrophic and the most representative groups are Cyanobacteria and dinoflagellates. Additionally, in this region, blooms of cyanophyte species were associated with diatoms and Mesozooplankton (copepods). A total of 178 zooplankton taxa were observed in this area, with Copepoda being the most diverse and abundant group. Two different zooplankton communities were identified: a low-diversity, high-abundance coastal community and a high-diversity, low-abundance oceanic community offshore. The CO2 fugacity (fCO2sw), calculated from total alkalinity (1,450 < TA < 2,394 µmol kg-1) and dissolved inorganic carbon (1,303 < DIC < 2,062 µmol kg-1) measurements, confirms that the Amazon River plume is a sink of atmospheric CO2 in areas with salinities <35 psu, whereas, in regions with salinities >35 and higher-intensity winds, the CO2 flux is reversed. Lower fCO2sw values were observed in the NECC area. The ΔfCO2 in this region was less than 5 µatm (-0.3 mmol m-2 d-1), while the ΔfCO2 in the coastal region was approximately 50 µatm (+3.7 mmol m-2 d-1). During the cruise, heterotrophic and autotrophic processes were observed and are indicative of the influences of terrestrial material and biological activity, respectively.

Nutrient budgets (C, N and P) and trophic dynamics of a Brazilian tropical estuary: Barra das Jangadas.

This paper focuses on the nutrient dynamics of a tropical estuary on the northeastern Brazilian coast, studied using the LOICZ biogeochemical budgeting protocol. We describe the methodology and assumptions underlying this model. Input data (monthly for rainfall, evaporation, river discharge, and concentrations of salt, phosphorus and nitrogen) were obtained during field campaigns in the Barra das Jangadas Estuary (BJE) over a 5 years period (1999 to 2003). Mass balance results indicate large inputs of nutrients to the system. The model shows that the seasonal variation of the Net Ecosystem Metabolism (NEM) indicates that the system passes from a stage of organic matter liquid production and mineralization during the dry season (-0.5 mmoles C m(-2) d(-1)) to liquid mineralization during the rainy season (-19 mmoles C m(-2) d(-1)). We suggest that the system varies slightly between autotrophy and heterotrophy during the year due to the rainfall regime, human activities in the basin (density population and sugarcane plantations), and associated DIP riverine loads. High per capita loads of N and P indicate a high population density and high runoff. The application of flux balance modeling was useful to understand the nutrient dynamics of this typical small tropical estuary.

Nutrient budgets (C, N and P) and trophic dynamicsof a Brazilian tropical estuary: Barra das Jangadas

This paper focuses on the nutrient dynamics of a tropical estuary on the northeastern Brazilian coast, studied using the LOICZ biogeochemical budgeting protocol. We describe the methodology and assumptions underlying this model. Input data (monthly for rainfall, evaporation, river discharge, and concentrations of salt, phosphorus and nitrogen) were obtained during field campaigns in the Barra das Jangadas Estuary (BJE) over a 5 years period (1999 to 2003). Mass balance results indicate large inputs of nutrients to the system. The model shows that the seasonal variation of the Net Ecosystem Metabolism (NEM) indicates that the system passes from a stage of organic matter liquid production and mineralization during the dry season (-0.5 mmoles C m-2 d-1) to liquid mineralization during the rainy season (-19 mmoles C m-2 d-1). We suggest that the system varies slightly between autotrophy and heterotrophy during the year due to the rainfall regime, human activities in the basin (density population and sugarcane plantations), and associated DIP riverine loads. High per capita loads of N and P indicate a high population density and high runoff. The application of flux balance modeling was useful to understand the nutrient dynamics of this typical small tropical estuary.

Este trabalho se focalizou na dinâmica de nutrientes de um estuário tropical na costa nordeste brasileira, usando o protocolo LOICZ de balanços biogeoquímicos. Nós descrevemos a metodologia e os pressupostos subjacentes a este modelo. Os dados de entrada (precipitação e evaporação mensal, vazão do rio, e as concentrações de sal, fósforo e nitrogênio) foram obtidos durante as campanhas de campo no estuário de Barra das Jangadas - Brasil durante um período de 5 anos (1999 a 2003). Os resultados indicam grandes entradas de nutrientes ao sistema. O modelo mostrou que a variação sazonal do Metabolismo do Ecosistema (NEM) indica que o sistema passa de uma fase de produção de líquido da matéria orgânica, durante a estação seca (-0,5 mmoles C m-2 d-1) para uma mineralização líquida durante a estação chuvosa (-19 mmol m-2 C d-1). Sugerimos que o sistema varia ligeiramente entre autotrófica e heterotrófica durante o ano, devido ao regime de chuvas, as atividades antrópicas na bacia (densidade populacional e as plantações de cana de açúcar), e as cargas ribeirinhas de DIP associadas. A alta carga de N e P per capita, indica uma alta densidade populacional e um alto runoff. A aplicação da modelagem de balanço de fluxos foi útil para o entendimento da dinâmica de nutrientes em um pequeno estuário tipicamente tropical.