HANTAVIRUS OUTBREAK

Following my thread yesterday which criticised aspects of the WHO’s strategy, I’m pleased to see they’ve done a 180° turn in the updated guidance published today:

who.int/docs/default-s…

EVERYONE from the ship will now be treated as HIGH-RISK contacts…

🧵 x.com/_catinthehat/s…Image
…and ALL high-risk contacts will now be required to ISOLATE in a designated facility or at home (depending on each country’s capabilities) for 42 days from last known exposure…

…and for the MV Hondius passengers & crew, the last day of exposure is the date of disembarkation. Image
So for the passengers & crew leaving the ship today, the clock for their 42 days in isolation starts ticking TODAY…

…and their isolation & monitoring will end on 21 June. Image
In another change to previous WHO guidance, I’m pleased to see this:

“In case social interactions are unavoidable, high-risk contacts should wear a RESPIRATOR (eg. FFP2 or N95)”

(Previous guidance had advised surgical masks which do NOT protect against airborne transmission). Image
Another concern raised was that the WHO had not considered the possibility of PRE-symptomatic transmission.

I’m pleased to see this has now been addressed:

“It is suggested that contacts be identified from 2 DAYS PRIOR to reported symptom onset of a confirmed or probable case.” Image
I’m delighted that the @WHO have listened to the concerns raised within the scientific community & amended their guidance 👏🏻 

6 weeks isolation will be tough but I just hope those involved follow the rules.

With self-isolation at home, that might be easier said than done… 🙄 Image
@WHO For British nationals returning to the UK from the ship, they will spend the first 3 days in hospital for clinical assessments & testing.

They will then be asked to isolate (either at home or at another suitable location) for up to 45 days from today.

gov.uk/government/new…Image

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More from @_CatintheHat

May 11
HANTAVIRUS OUTBREAK:

I’ve just listened to the health update from the US Nebraska Health Officials 🇺🇸

A few points of interest:

1/ in addition to the US passenger who tested positive & the one showing symptoms, it seems there is ANOTHER passenger who may have tested positive.
2/ Passengers currently in the Nebraska quarantine unit will spend a few days there being assessed.

If they remain symptom free & have support available at home to isolate safely, they’ll have the choice to complete the 42-day isolation either at home or in the quarantine unit.
3/ When asked about the US passengers who left the ship in St Helena on 24 Apr (at the same time at the Dutch woman who was symptomatic & sadly died on 26 Apr), they confirmed that these passengers have all been traced & are being monitored - but seems they’re NOT self-isolating.
Read 10 tweets
May 9
HANTAVIRUS OUTBREAK 🧵

Following the WHO press briefing, I wanted to compile a thread with the key points.

1/ ISOLATION OF PASSENGERS

Concerningly, it seems the WHO are NOT recommending to isolate cruise ship passengers (even high-risk contacts) UNLESS they develop symptoms.
Just to quickly recap, it has been confirmed that the passengers & crew (including the 30 who disembarked on 24 April in St Helena) come from a total of 28 different countries.

The full breakdown of countries for both passengers 🟥 & crew 🟦 is detailed below ⬇️ Image
When the 146 people remaining on the ship are repatriated to their home countries, each country will adopt their own local protocols.

However, the WHO are only recommending:

▪️SYMPTOMATIC cases ➡️ isolation
▪️ASYMPTOMATIC cases ➡️ monitoring
Read 41 tweets
May 5
HANTAVIRUS OUTBREAK ON CRUISE

“Human-to-human transmission suspected on board hantavirus cruise ship, WHO says”

▪️7 cases identified so far.

▪️3 people (2 Dutch, 1 German) have tragically died.

▪️1 Briton is in intensive care in South Africa.

edition.cnn.com/2026/05/05/afr… x.com/cnn/status/205…Image
The exact Hantavirus has not yet been identified, but given the ship departed from Argentina, it’s a distinct possibility it’s the Andes Virus.

This strain is known to be transmissible between humans & previously caused superspreader events in Argentina.

nejm.org/doi/pdf/10.105…Image
Below are further details about the Andes Virus superspreader events in Argentina (in 2018):

▪️ Transmission event: Birthday Party
5 guests infected
Symptom onset 17-24 days later

▪️ Transmission event: Funeral/Wake
10 guests infected
Symptom onset 14-40 days later Image
Read 50 tweets
Mar 22
MENINGITIS B TRANSMISSION

There’s been a lot of discussion online and in the media about how exactly Meningitis B spreads.

A lot of it is conflicting & confusing.

So let’s put opinions & hearsay aside and take a proper look at what the latest science actually tells us…

🧵 Image
The UK National Institute for Health & Care Excellence (NICE) states that bacterial meningitis and meningococcal disease is transmitted by the following 3 modes:

▪️ aerosol
▪️droplets
▪️direct contact

cks.nice.org.uk/topics/meningi…Image
The first of these modes of transmission, AEROSOL, has been the subject of heated debate.

Let’s look at why…

Notice the second line:

“Transmission usually requires either frequent or prolonged close contact.”

At first, this may seem contradictory with aerosol transmission… Image
Read 22 tweets
Mar 19
COVID INQUIRY: MODULE 3 REPORT

“Fundamental flaws in the UK’s approach to IPC [infection prevention & control] guidance, for example in relation to the use of PPE, put patients and healthcare workers at risk.”

— Baroness Hallett, Chair of the Covid Inquiry

Read more here… ⬇️
These are the words we were all hoping to hear:

“Initial guidance on preventing the spread of infection was flawed. It assumed the virus was spread by contact transmission, failing properly to consider the extent to which it was also spread by AIRBORNE transmission.” Image
But it wasn’t just the “initial guidance” that was flawed!

To this very day, the IPC guidance STILL does not reflect the latest science on AIRBORNE transmission.
Read 4 tweets
Mar 18
Last week, CATA released two explosive reports which revealed a scandal of monumental proportions.

Flawed decisions were made at the start of the Covid pandemic - and then covered up for years to come.

In this series of videos, @SafeDavid3 talks us through the key findings…
The CATA Executive team have worked tirelessly in their pursuit of the truth, forensically analysing over 17,000 Covid Inquiry documents & submitting countless FOI requests.

Concerningly, they discovered around 100 key emails which have not been disclosed to the Covid Inquiry…
Their report explores 7 separate occasions when the IPC Cell was challenged re: the adequacy of its guidance on respiratory protection for healthcare workers.

This included challenges from PHE/UKHSA, Chief Nursing Officers & even the CMO.

Each time, concerns were brushed aside.
Read 17 tweets

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