Comment identifier un virion dans un échantillon ?

L'identification se fait par microscopie électronique ou tests PCR.

Quels tests sont utilisés pour détecter les virions ?

Les tests PCR, les cultures virales et les tests sérologiques sont courants.

Les virions peuvent-ils être visualisés au microscope ?

Oui, les virions peuvent être visualisés au microscope électronique.

Quelle est la méthode de culture des virions ?

Les virions sont cultivés dans des cellules hôtes appropriées en laboratoire.

Les tests sérologiques détectent-ils les virions ?

Non, ils détectent les anticorps contre les virions, pas les virions eux-mêmes.

Quels symptômes indiquent une infection virale ?

Fièvre, fatigue, douleurs musculaires et symptômes respiratoires sont fréquents.

Les virions causent-ils toujours des symptômes ?

Non, certains virions peuvent être asymptomatiques chez l'hôte.

Comment les symptômes varient-ils selon le virion ?

Les symptômes dépendent du type de virus et de l'hôte infecté.

Les symptômes d'une infection virale sont-ils immédiats ?

Non, il peut y avoir une période d'incubation avant l'apparition des symptômes.

Les virions peuvent-ils provoquer des symptômes neurologiques ?

Oui, certains virions, comme ceux de la grippe, peuvent affecter le système nerveux.

Comment prévenir les infections virales ?

Se laver les mains, éviter les contacts étroits et se faire vacciner sont essentiels.

Les masques protègent-ils contre les virions ?

Oui, les masques réduisent la transmission des virions par voie respiratoire.

Les vaccins sont-ils efficaces contre tous les virions ?

Non, chaque vaccin cible des virions spécifiques et ne protège pas contre tous.

L'hygiène personnelle aide-t-elle à prévenir les infections ?

Oui, une bonne hygiène personnelle réduit le risque d'infections virales.

Les voyages augmentent-ils le risque d'infection virale ?

Oui, les voyages peuvent exposer à de nouveaux virions et augmenter le risque d'infection.

Quels traitements sont efficaces contre les virions ?

Les antiviraux, comme l'oseltamivir, sont utilisés pour traiter certaines infections virales.

Les antibiotiques sont-ils efficaces contre les virions ?

Non, les antibiotiques ne sont pas efficaces contre les infections virales.

Comment les vaccins agissent-ils contre les virions ?

Les vaccins stimulent le système immunitaire à reconnaître et combattre les virions.

Les traitements symptomatiques sont-ils utiles ?

Oui, ils aident à soulager les symptômes, mais ne traitent pas l'infection virale.

Les traitements antiviraux sont-ils toujours efficaces ?

Non, leur efficacité dépend du type de virus et de la résistance virale.

Quelles complications peuvent survenir après une infection virale ?

Des complications comme la pneumonie, la déshydratation ou des infections secondaires peuvent survenir.

Les virions peuvent-ils causer des maladies chroniques ?

Oui, certains virions, comme le VIH, peuvent entraîner des maladies chroniques.

Comment les complications sont-elles gérées ?

Les complications sont gérées par des traitements symptomatiques et des soins médicaux appropriés.

Les complications varient-elles selon le virion ?

Oui, chaque virion peut entraîner des complications différentes selon l'hôte.

Les enfants sont-ils plus à risque de complications ?

Oui, les enfants peuvent être plus vulnérables aux complications des infections virales.

Quels sont les facteurs de risque d'infection virale ?

Les facteurs incluent l'âge, le système immunitaire affaibli et l'exposition à des porteurs.

Le stress affecte-t-il le risque d'infection virale ?

Oui, le stress peut affaiblir le système immunitaire et augmenter le risque d'infection.

Les maladies chroniques augmentent-elles le risque d'infection ?

Oui, les maladies chroniques peuvent affaiblir l'immunité et augmenter le risque d'infection virale.

L'environnement joue-t-il un rôle dans le risque viral ?

Oui, des environnements surpeuplés ou insalubres augmentent le risque d'infections virales.

Les habitudes alimentaires influencent-elles le risque viral ?

Oui, une alimentation déséquilibrée peut affaiblir le système immunitaire et augmenter le risque.

Virion - Informations médicales vérifiées

De-normalizing smoking in urban areas: Public smoking bans and smoking prevalence.

01 2023

DOI: 10.1016/j.ehb.2022.101202 PMID: 36463577

The effectiveness of command-and-control policies related to tobacco use has been studied in high-income countries. Still, there is limited evidence of their effects in low and middle-income countries...

Child Humans Smoking Tobacco Smoke Pollution Smoke-Free Policy +3 autres

Secondhand Smoke Exposure and Smoking Prevalence Among Adolescents.

02 10 2023

DOI: 10.1001/jamanetworkopen.2023.38166 PMID: 37862017

Secondhand smoke is a substantial risk factor for youth health globally, including in Japan, where tobacco control policies should be reassessed.... To assess trends in the prevalence of secondhand smoke exposure among Japanese adolescents from 2008 to 2017 and to examine the association between its frequency and smoking during the study period.... This study comprised a nationally representative, self-administered, school-based, cross-sectional survey focusing on tobacco and alcohol use and related factors among students in grades 7 to 12 (ages... Prevalence of secondhand smoke exposure among adolescents in Japan from 2008 to 2017 and changes in the association between secondhand smoke exposure frequency and prevalence of smoking were examined ... Data were analyzed for 95 680 adolescents in 2008 (50.7% boys), 100 050 in 2012 (51.6% boys), and 64 152 in 2017 (53.9% boys). At baseline, 42.0%, 38.5%, and 34.6% of the participants were junior high... In this cross-sectional study, the prevalence of secondhand smoke exposure among adolescents in Japan decreased but remained at high levels overall. There may not be a hazard-free threshold for smokin...

Male Humans Adolescent Female Tobacco Smoke Pollution +4 autres

Perceived Stress and Smoking Cessation: The Role of Smoking Urges.

10 01 2023

DOI: 10.3390/ijerph20021257 PMID: 36674019

Despite the fact that perceived stress is related to abstinence smoking outcomes, no studies have investigated the mediational effect of specific tobacco-related variables on this relationship. This s...

Female Humans Male Smoking Cessation Smoking +3 autres

The Understanding of Maternal Smoking among Women who were Smoking or had Quit Smoking during Pregnancy.

Jun 2023

DOI: 10.1177/08445621221125062 PMID: 36214102

Maternal tobacco smoking during pregnancy is associated with adverse health effects for the woman, fetus, and child, including such serious effects as preterm birth, low birth weight, stillbirth, and ... In order to support pregnant women to quit smoking, it is essential to know determinants of quitting smoking in pregnancy. The purpose of this research was to examine women's understanding of maternal... The study was a cross-sectional survey with anonymous questionnaires. The sample consisted of 161 pregnant and postnatal women who were continuing or had continued to smoke during pregnancy or had qui... A large majority of the women had low to moderate understanding of maternal smoking. Those with higher levels of understanding were more likely to quit smoking during pregnancy than were those with a ... As a modifiable factor, pregnant women's understanding of maternal smoking can be readily targeted with informational interventions in an effort to help them quit smoking....

Child Female Pregnancy Humans Infant, Newborn +5 autres

Smoking and environmental tobacco smoke exposure: implications in ocular disorders.

Mar 2023

DOI: 10.1080/15569527.2022.2144874 PMID: 36369835

This article aims to gather and review the available knowledge on several implications of smoking and environmental tobacco smoke (ETS) exposure in ocular disorders and provides pathomechanistic insig... PubMed and Scopus databases were searched for relevant studies on the association of smoking and ETS exposure with various ocular disorders. Studies with different evidence levels, e.g., in-vivo, case... Smoking is an established, modifiable risk factor in several ocular diseases, including cataract, age-related macular degeneration, and Graves' ophthalmopathy; smokers are subject to more severe disea... In addition to smoking, ETS exposure is also a significant public health concern with possible links to several ocular diseases. However, the level of education of at-risk populations in this regard d...

Child Female Humans Pregnancy Eye +5 autres

From smoke to stroke: quantifying the impact of smoking on stroke prevalence.

23 Aug 2024

DOI: 10.1186/s12889-024-19754-6 PMID: 39180018

The objective of this study is to assess the impact of smoking on stroke prevalence and to delineate the relationship between smoking-related factors and the risk of stroke, incorporating an analysis ... Our analysis encompassed 9,176 participants, evaluating clinical attributes alongside smoking-related characteristics such as duration of cigarette consumption, and levels of nicotine, tar, and carbon... The overall prevalence of stroke in our cohort was 3.4%. Statistically significant associations were found between stroke incidence and factors such as age, gender, education, and marital status (p < ... This study confirms that smoking significantly contributes to increased stroke risk, particularly through exposure to nicotine and carbon monoxide. The findings emphasize the necessity for tailored st...

Humans Male Female Middle Aged Stroke +7 autres

Academic Performance and Peer or Parental Tobacco Use among Non-Smoking Adolescents: Influence of Smoking Interactions on Intention to Smoke.

06 01 2023

DOI: 10.3390/ijerph20021048 PMID: 36673810

Intention to smoke is an important predictor of future smoking among adolescents. The purpose of our study was to examine the interaction between academic performance and parents/peer tobacco use on a... A multi-stage stratified sampling was used to select participants, involving 9394 students aged between 9-16 years in Changchun city, northeastern China. Multiple logistic regression analyses were con... Of all the non-smoking students sampled, 11.9% intended to smoke within the next five years. The individual effect of academic performance and peer/parental smoking was significant. The protective eff... These preliminary results suggest that peer smoking or smoking by both parents reinforces the association between low academic performance and the intention to smoke among adolescents. Enhancing schoo...

Humans Adolescent Child Intention Family +5 autres

Parental Smoking in Childhood as a Smoking Risk Factor Throughout Middle Age.

08 2023

DOI: 10.1016/j.amepre.2023.02.023 PMID: 36863667

Children of people who smoke have a well-documented higher risk of smoking initiation. However, little is known about the persistence of the association between parental smoking and children's own smo... This study uses data collected by the Panel Study of Income Dynamics collected between 1968 and 2017 and investigates the association between parental smoking and children's own smoking through middle... The results show an increased risk of smoking among adult children of parents who smoked. Their odds were elevated in young adulthood (OR=1.55, 95% CI=1.11, 2.14), established adulthood (OR=1.53, 95% ... The findings highlight the durability of early life influences, especially for people with low SES....

Adult Humans Middle Aged Young Adult Tobacco Smoke Pollution +4 autres

Secondhand smoke exposure among never-smoking adolescents in Wuhan, China.

20 08 2022

DOI: 10.1038/s41598-022-18612-y PMID: 35988001

Without smoke-free legislation in Wuhan, China, we investigated secondhand smoke (SHS) exposure at home, school, and public places for never-smoking school-going adolescents in 2019. A cross-sectional...

Adolescent China Cross-Sectional Studies Environmental Exposure Humans +3 autres

Cigarette Smoking and Asthma.

11 2022

DOI: 10.1016/j.jaip.2022.04.034 PMID: 35533997

Globally, around half the adult asthma population are current or former cigarette smokers. Cigarette smoking and asthma interact to induce an "asthma-smoking phenotype(s)," which has important implica...

Humans Cigarette Smoking Smoking Asthma Adrenal Cortex Hormones +1 autres

Virion : Questions médicales fréquentes

Termes MeSH sélectionnés :

Questions fréquentes et termes MeSH associés

Diagnostic 5

Symptômes 5

Prévention 5

Traitements 5

Complications 5

Facteurs de risque 5

Contenu validé par Dr Olivier Menir

Sous-catégories

Nucléocapside

Enveloppe virale

Capside

Auteurs principaux

Sources (6313 au total)