Viral claim says plague was released and Israel holds the antidote

Doxycycline is an antibiotic effective against plague, but there is no single "antidote" and no plague has been released. The 97% figure comes from a randomized clinical trial with 30 participants, not from a current situation.

## What the viral message actually says

A message circulating on social media claims that doxycycline treats plague with a **97%** survival rate. The text adds that **29 out of 30** patients survived in a randomized clinical trial and ends with a phrase: "This is not the Middle Ages." The post is signed by **Nicolas Hulscher**, a person with a background in public health.

The numerical claim is concrete and verifiable in the medical literature. Plague, caused by the bacterium **Yersinia pestis**, is treated today with antibiotics such as streptomycin, gentamicin or doxycycline. Without treatment, bubonic plague has a high fatality rate; with antibiotics, that fatality drops dramatically. That is neither new nor secret.

## The 30-patient trial and its context

The trial referred to in the message is not recent. It is a randomized clinical study conducted in **Madagascar** and published in a medical journal in the 1990s. It involved **30** patients with bubonic plague. Doxycycline was compared with streptomycin, and the results showed very high survival in both groups.

A trial with **30** participants has limited statistical value. It does not allow precise extrapolation to entire populations or to all forms of the disease. Pneumonic plague, for example, is more severe and its treatment requires hospitalization and isolation. Bubonic plague, the most common form, responds well to antibiotics if administered in time.

## Why the economic framing matters

Behind a tweet about a medieval disease lies a concrete economic issue: access to cheap, generic antibiotics. Doxycycline is an old drug, off-patent and low-priced. That makes it an accessible tool in countries with fragile health systems, where plague remains endemic in regions of **Africa**, **Asia** and **America**.

Plague has not disappeared. The **World Health Organization** records cases every year, though far below the figures of historical pandemics. Between **2010 and 2015**, **3,248** cases were reported worldwide, according to WHO data. Most are concentrated in **Madagascar**, the **Democratic Republic of the Congo** and **Peru**.

## What the message does not say

The viral text does not mention that doxycycline is not an "antidote" in the sense of a single or immediate cure. It is an antibiotic that works if administered early and under medical supervision. It also does not say that plague has not been deliberately "released." That part of the original message, which speaks of traitors and a supposed antidote in the hands of **Israel**, has no factual backing whatsoever.

The claim that someone has released the plague is an evidence-free theory. Plague is a zoonotic disease endemic to rodents and their fleas. Human outbreaks occur when sanitation and housing conditions allow it. There is no evidence of intentional release.

If you suspect any infectious disease, including plague, the prudent course is to see a healthcare professional and not rely on viral messages.