Science & Tech 25 May 2026

Anti-COVID Drug Ensitrelvir Marks a Milestone Against Future Viruses

The anti-COVID drug Ensitrelvir is a milestone in antiviral research, blocking a key viral enzyme — an approach adaptable to future viruses.

upsc ssc

The success of the drug Ensitrelvir in preventing COVID-19 marks a milestone in a research quest that began at the start of the pandemic. The work traces back to January 2020, when the full genome sequence of the SARS-CoV-2 virus was first shared publicly with virologists.

That sequence revealed key parts of the virus, including an enzyme called the protease that the virus needs to multiply. Drugs that block this protease can stop the virus from replicating — the principle behind antiviral medicines like Ensitrelvir.

Beyond COVID-19, such antivirals are significant because the approach can be adapted to fight future viral threats. Advances in drug development are a recurring science-and-technology theme for competitive exams.

Key Points to Remember

  • Ensitrelvir succeeded in preventing COVID-19
  • Research traces to the SARS-CoV-2 genome shared in January 2020
  • Works by blocking the virus's protease enzyme
  • Blocking protease stops viral replication
  • Approach can be adapted against future viral threats

Exam Relevance

Relevant for UPSC/SSC Prelims (Science & Technology — Health, Biotechnology).

UPSC SSC
ensitrelvir antiviral covid biotechnology health