Online Biology Notes for undergraduate and graduate students
Virology Notes
Disease caused by SARS-CoV-2 is officially called COVID-19 COVID-19 According to the World Health Organization (WHO), the disease caused by Novel Coronavirus, 2019-nCoV (SARS-CoV-2) is now officially called COVID-19. CO means Corona. VI means Virus. D means Disease. 19 means the year that it was first discovered. “We had to find a name that did … Read more Disease caused by SARS-CoV-2 is officially called COVID-19
Introduction Lab diagnosis refers to the identification, examination & confirmation of pathogens in the lab. The diagnosis of virus infection can be established in several ways, often used together, namely: Detection of virus particles, viral antigens or viral nucleic acids in specimens taken from the appropriate site. Culture of infectious viruses from the appropriate sites. … Read more Diagnosis of Novel Coronavirus, SARS-CoV-2 (COVID-19)
In the past two decades, we have witnessed epidemic and pandemic, severe respiratory tract illnesses, whose etiological pathogens are viruses. They include H5N1 influenza in 1997, severe acute respiratory syndrome (SARS) in 2003 and pandemic H1N1 influenza in 2009, epidermic MERS-CoV in 2012 and just recently the emergence of the novel coronavirus, SARS-CoV-2 Acute Respiratory … Read more Treatment, Vaccine and Management of COVID-19 (SARS-CoV-2)
Image Source: Wikipedia and CDC Disclaimer: These data are collected from different sources over the internet. There can be some inaccuracy in the data given on this page. Epidemiology of COVID-19 caused by SARS-CoV-2 as of February 17, 2020 There were 71,337 confirmed cases (including clinically diagnosed cases also) of COVID-19 as of February 17, … Read more Epidemiology of COVID-19 caused by SARS-CoV-2 (Daily Update)
Introduction A recent cluster of pneumonia cases in Wuhan, China was caused by a novel beta coronavirus, the 2019 novel coronavirus (SARS-CoV-2). According to the World Health Organization (WHO), the disease caused by Novel Coronavirus, 2019-nCoV (SARS-CoV-2) is now officially called COVID-19. Data collected and analyzed from patients using Real-time PCR and Next Generation Sequencing … Read more Novel Coronavirus, SARS-CoV-2 and COVID-19 (Updated 2020)
Measles, Mumps, Rubella (MMR) and MMR Vaccine The MMR which is comprised of a 3 in 1 vaccine, is one of the recommended childhood immunizations. It protects children against three highly contagious Viruses which are as follows: Measles Mumps Rubella (German Measles) Image Source: NFID and CSC Pharmaceuticals Measles Definition Measles is “an acute viral … Read more Measles, Mumps, Rubella (MMR) and MMR Vaccine
Poliovirus It is an infectious disease caused by poliovirus which affects the spinal cord and brain stem, it leads to paralysis and even leads to death. Poliovirus is the causative agent of poliomyelitis. Children under 5 years of age are more susceptible to this disease. Reservoir Human. Spread through feces. Contaminated food and water. So, … Read more Poliovirus and Polio Vaccines
Virus Classification on the basis of morphology and replication Viruses are a specific group of microorganisms that can replicate only inside of a cell. These are extremely small organisms and visible only under an electron microscope. Viral infections can occur in all types of life forms including plants, animals and other microorganisms (bacteria, archaea). A … Read more Virus Classification on the basis of morphology and replication
Outbreak of Wuhan pneumonia 2019-20 (2019-nCoV) The recent outbreak of Wuhan pneumonia has threatened China and the nearby states. Travelers from the Wuhan city being suffered from fever and cough are on strict observations at the airports. Medical authorities in the different international airports are supervising the travelers as to prevent the spread of the … Read more Outbreak of Wuhan pneumonia 2019-20 (2019-nCoV)
Plant viruses are transmitted from plant to plant in several ways. The mode of transmission includes: Vegetative propagation Mechanically through sap Through seed, pollen, dodder By specific insects, mites, nematodes, and fungi Image Sources: Crop Nutrition Laboratory Services Ltd. and https://doi.org/10.1111/1744-7917.12470 Transmission by Vegetative Propagation Whenever plants are propagated vegetatively by budding or grafting, any … Read more Transmission of Plant Viruses