Chifen Sama 🩺💻

Nurse who codes. Building digital health that survives 2G, blackouts & real emergencies. Founder, LifeDrop 🩸 Writing at 🇨🇲

[Chifen Sama 🩺💻 @sama_chifen]

0.1 + 0.2 = 0.30000000000000004 🤨

Fine for most apps. In a neonatal unit, 0.05 ml can be a 25% overdose.

So I built a dosage engine with zero floats.

https://t.co/Abqd2Aplei

#PatientSafety #TypeScript

[Chifen Sama 🩺💻 @sama_chifen]

A health chatbot that answers everything is a dangerous chatbot. ⚠️

1️⃣ Scope is a feature
2️⃣ Hand off, don't dead-end
3️⃣ Log what people actually ask

Nurses learn early that knowing your limits is part of being safe. Software should too.

#ClinicalAI

[Chifen Sama 🩺💻 @sama_chifen]

240 people. 127 days. Zero promotion budget. 🤯

I built two WhatsApp health bots, MORIA and Aunty Queen, for Vision in Action Cameroon. Credit belongs to the VIAC team. 🙏🏾

Design the fallback as carefully as the happy path.

https://t.co/dyQRDX5bM9

[Chifen Sama 🩺💻 @sama_chifen]

2016: the Anglophone crisis cost me a school year. I spent it online and found Arthur Zang's Cardiopad. 💡

Today I keep learning from Jean Lobe Lobe and Waspito, and from Alain Nteff's SMS work.

Meet people on the network they already have.

#HealthTech #Cameroon

[Chifen Sama 🩺💻 @sama_chifen]

Our app worked. People still wouldn't use it.

Ayodah died at the install screen. 📱💀

But the requests kept coming, to my personal WhatsApp. At 3 AM.

Build for the channel people already trust.

https://t.co/Y3z9u2jFRd

[Chifen Sama 🩺💻 @sama_chifen]

"African health workers will resist AI."

So I measured it. 387 health workers at Buea Regional Hospital, 92.4% response rate. 📊

Not resistant. Under-equipped and under-trained. The fix is training, not blame.

https://t.co/79GgDTrpoI

[Chifen Sama 🩺💻 @sama_chifen]

Blood isn't scarce in Cameroon. It's unfindable. 🩸

Scarcity you accept. Findability is a coordination problem, and coordination can be built.

So LifeDrop lives inside WhatsApp. No app, no account at 2 AM.

https://t.co/dFqdmfZCXy

[Chifen Sama 🩺💻 @sama_chifen]

18 hours.

That's how long it took my family to find one blood donor for my mother in 2022.

The city was full of willing donors. Nobody was connecting them in time.

That night became Ayodah: 400+ donors, 310 donations. 🩸

#BloodDonation #DigitalHealth

[Chifen Sama 🩺💻 @sama_chifen]

I'm a nurse. I'm also a self-taught software engineer. 🩺💻

For years I thought I had to pick one. Turns out it's the same job, seen from two sides of the bed.

The messy version of how I got here 👇
https://t.co/0XUQLiedJf

#DigitalHealth #NurseWhoCodes

[AppsTech @AppsTech]

Most businesses don't need more AI tools. They need clarity on which use cases fit their operations, systems, and teams.

This free assessment takes about three minutes and returns specific recommendations, not a generic maturity score:

https://t.co/ULqn8cLFBC

[Chifen Sama 🩺💻 @sama_chifen]

Sensational!!

[YoLs @YOLO_AEMCS]

big HIM !!! 😤.

[Margaret Dohsen🇨🇲, MPH @dohsen_margaret]

To ensure the team's health and safety at sea, I make sure I get enough drinking water for everyone.

Additionally, I ensure that each person has either Crocs or Chan shoes and that everyone has an extra safety tube in addition to the provided life jacket.

Water side is easy.

[MrBeast @MrBeast]

Mr and MrsBeast ❤️

[Chifen Sama 🩺💻 @sama_chifen]

@it_Rutie @grok what's your take on this?

[Chifen Sama 🩺💻 @sama_chifen]

@MbengMartin3 I don follow more than 3 oh

[Chifen Sama 🩺💻 @sama_chifen]

@AlinaOnChain Ola!!!! Let's do this

[Chifen Sama 🩺💻 @sama_chifen]

@francystreche @PR_Paul_BIYA @ChantalBIYA_Cmr @CabinetCivilPRC @PRC_Cellcom @MincomCameroun @diplocam_minrex @Pm237Services @CamerounTribune You're not worth being called a journalist if you boldly come only and spit such stupid facts... Like do you have an ounce of proper education. If you do you will actually see what's going on before using the media space to say thrash

[Chifen Sama 🩺💻 @sama_chifen]

@francystreche @Adesolive @PR_Paul_BIYA @ChantalBIYA_Cmr @CabinetCivilPRC @PRC_Cellcom @MincomCameroun @diplocam_minrex @Pm237Services @CamerounTribune You di craze for ya head

[Chifen Sama 🩺💻 @sama_chifen]

@francystreche @Adesolive @PR_Paul_BIYA @ChantalBIYA_Cmr @CabinetCivilPRC @PRC_Cellcom @MincomCameroun @diplocam_minrex @Pm237Services @CamerounTribune You're mad

[Chifen Sama 🩺💻 @sama_chifen]

@francystreche @PR_Paul_BIYA @ChantalBIYA_Cmr @CabinetCivilPRC @PRC_Cellcom @MincomCameroun @diplocam_minrex @Pm237Services @CamerounTribune Have you asked why the whole nation has been rioting since the announcement... Ask yourself if everyone is saying no then who voted.
How does he win in regions like the northwest when people could barely leave their homes on the day of the elections due to insecurities.