Arab Press

بالشعب و للشعب
Friday, Jun 20, 2025

Transmisores silentes, responsables del 50% de   los contagios por el virus

'Silent transmitters' responsible for 50% of virus infections

The influence of presymptomatic and asymptomatic people in the transmission of the SARS-CoV-2 virus, which causes Covid-19 disease, was evidenced in a scientific study published last July 6 in the journal Actas of the National Academy of Sciences from the United States.
The study, led by Alison Galvani of Yale University and her colleagues, indicates that presymptomatic and asymptomatic people are responsible for 50% of infections.

The research used coronavirus transmission models and existing research, which already indicated that asymptomatic infections represent 17.9% to 30.8% of all infections.

Based on these figures, the team made a new transmission model and found that presymptomatic people would represent 47% to 48% of transmission, and asymptomatic people 3.4% to 6.6%.

The document also states that immediate isolation of all symptomatic cases would not be enough to control the spread. Authorities would have to identify and isolate more than a third of the silent transmitters, as well as all symptomatic cases, to prevent an outbreak.

On these findings, Arturo Rebollón, epidemiologist and public health researcher affiliated with Florida State University, said that presymptomatic and asymptomatic patients are detected by following up with rapid antigen tests, and recommended that when the result of an antigen test is negative be verified by other technologies.

This is similar to doing Pap tests to detect uterine cancer, doing mammograms to detect breast cancer, doing the rapid test for HIV or dengue. None of these strategies is 100% effective, but they have a high return on investment due to their low cost and sufficient diagnostic capacity, he explained.

In Panama, little is known about the carriers of the virus without symptoms, but the authorities of the Ministry of Health reported last May that four resident doctors of surgery at the Santo Tomás Hospital became infected with Covid-19 after having contact with patients without symptoms.
Newsletter

Related Articles

Arab Press
0:00
0:00
Close
16 Billion Login Credentials Leaked in Unprecedented Cybersecurity Breach
Senate hearing on who was 'really running' Biden White House kicks off
G7 Leaders Fail to Reach Consensus on Key Global Issues
Mass exodus in Tehran as millions try to flee following Trump’s evacuation order
Iranian Military Officers Reportedly Seek Contact with Reza Pahlavi, Signal Intent to Defect
China's Iranian Oil Imports Face Disruption Amid Escalating Middle East Tensions
Trump Demands Iran's Unconditional Surrender Amid Escalating Conflict
Israeli Airstrike Targets Iranian State TV in Central Tehran
President Trump is leaving the G7 summit early and has ordered the National Security Council to the Situation Room
Netanyahu Signals Potential Regime Change in Iran
Analysts Warn Iran May Resort to Unconventional Warfare
Iranian Regime Faces Existential Threat Amid Conflict
Energy Infrastructure Becomes War Zone in Middle East
Iran Conducts Ballistic Missile Launches Amid Heightened Tensions with Israel
Iran Signals Openness to Nuclear Negotiations Amid Ongoing Regional Tensions
Shock Within Iran’s Leadership: Khamenei’s Failed Plan to Launch 1,000 Missiles Against Israel
UK Deploys Jets to Middle East Amid Rising Tensions
Exiled Iranian Prince Reza Pahlavi Urges Overthrow of Khamenei Regime
Wreck of $17 Billion San José Galleon Identified Off Colombia After 300 Years
Iran Launches Extensive Missile Attack on Israel Following Israeli Strikes on Nuclear Sites
Israel Issues Ultimatum to Iran Over Potential Retaliation and Nuclear Facilities
Coinbase CEO Warns Bitcoin Could Supplant US Dollar Amid Mounting National Debt
Trump to Iran: Make a Deal — Sign or Die
Operation "Like a Lion": Israel Strikes Iran in Unprecedented Offensive
Israel Launches 'Operation Rising Lion' Targeting Iranian Nuclear and Military Sites
Israeli Forces Intercept Gaza-Bound Aid Vessel Carrying Greta Thunberg
IMF Warns of Severe Global Trade War Impacts on Emerging Markets
Syria to Reconnect to Global Economy After 14 Years of Isolation
Saudi Arabia Faces Uncertainty Over Succession After Mohammed bin Salman
Israel Confirms Arming Gaza Clan to Counter Hamas Influence
Majority of French Voters View Macron's Presidency as a Failure
U.S. Reduces Military Presence in Syria
Trump Demands Iran End All Uranium Enrichment in Nuclear Talks
Iran Warns Europe Against Politicizing UN Nuclear Report
Businessman Mauled by Lion at Luxury Namibian Lodge
Paris Saint-Germain's Greatest Triumph Is Football’s Lowest Point
OPEC+ Agrees to Increase Oil Output for Third Consecutive Month
Turkey Detains Istanbul Officials Amid Anti-Corruption Crackdown
Meta and Anduril Collaborate on AI-Driven Military Augmented Reality Systems
EU Central Bank Pushes to Replace US Dollar with Euro as World’s Main Currency
European and Arab Ministers Convene in Madrid to Address Gaza Conflict
Head of Gaza Aid Group Resigns Amid Humanitarian Concerns
U.S. Health Secretary Ends Select COVID-19 Vaccine Recommendations
Trump Warns Putin Is 'Playing with Fire' Amid Escalating Ukraine Conflict
India and Pakistan Engage Trump-Linked Lobbyists to Influence U.S. Policy
U.S. Halts New Student Visa Interviews Amid Enhanced Security Measures
Trump Administration Cancels $100 Million in Federal Contracts with Harvard
SpaceX Starship Test Flight Ends in Failure, Mars Mission Timeline Uncertain
King Charles Affirms Canadian Sovereignty Amid U.S. Statehood Pressure
Iranian Revolutionary Guard Founder Warns Against Trusting Regime in Nuclear Talks
×