डेंगी संक्रमण घट्दै

७ महिना अघि

२१३०

2006 Prof. Frank Hadley Collins, Dir., Cntr. for Global Health and Infectious Diseases, Univ. of Notre Dame This 2006 photograph depicted a female Aedes aegypti mosquito while she was in the process of acquiring a blood meal from her human host, who in this instance, was actually the biomedical photographer, James Gathany, here at the Centers for Disease Control. You’ll note the feeding apparatus consisting of a sharp, orange-colored “fascicle”, which while not feeding, is covered in a soft, pliant sheath called the "labellum”, which retracts as the sharp stylets contained within pierce the host's skin surface, as the insect obtains its blood meal. The orange color of the fascicle is due to the red color of the blood as it migrates up the thin, sharp translucent tube. The fascicle is composed of a pair of needle-sharp "stylets". The larger of the two stylets, known as the "labrum", when viewed in cross-section takes on the shape of an inverted "V", and acts as a gutter, which directs the ingested host blood towards the insect's mouth. As the primary vector responsible for the transmission of the Flavivirus Dengue (DF), and Dengue hemorrhagic fever (DHF), the day-biting Aedes aegypti mosquito prefers to feed on its human hosts. Ae. aegypti also plays a major role as a vector for another Flavivirus, "Yellow fever". Frequently found in its tropical environs, the white banded markings on the tarsal segments of its jointed legs, though distinguishing it as Ae. aegypti, are similar to some other mosquito species. Also note the lyre-shaped, silvery-white markings on its thoracic region as well, which is also a determining morphologic identifying characteristic.

This female’s abdomen had become distended due to the blood meal she was ingesting, imparting the red coloration to her translucent abdominal exoskeleton.

नेपालमा डेंगी संक्रमण घट्दै गएको छ ।

इपिडिमियोलोजी तथा सरुवा रोग नियन्त्रण महाशाखाका किटजन्य रोग शाखाका प्रमुख डा. गोकर्णप्रसाद दाहालले जाडो बढ्नुका साथै सरकारले डेंगी सार्ने लामखुट्टे नियन्त्रण अभियान सञ्चालन गरेपछि कार्तिक यता संक्रमण घट्दै गएको बताए ।

सरकारले डेंगीको संक्रमण बढ्न थालेपछि हरेक शुक्रबार सरकारी तथा गैरसरकारी कार्यालयमा र अस्पताल परिसरमा सरसफाइ गर्नुका साथै ‘लामखुट्टे खोज र नष्ट गर’ अभियान सञ्चालन गरिरहेको छ ।

उनका अनुसार अहिले नेपालमा ४२औं हप्ताबाट डेंगी संक्रमण घट्न थालेको हो ।